Minecraft: Java Edition 1.21.11 - Mounts of Mayhem – Minecraft Feedback

Today Mounts of Mayhem charges into Minecraft, bringing a new weapon to wield, mounts to tame, foes to face, and strategies to master! Challengers await beneath scorching suns, night skies, and deep in the ocean’s depths – and each clash will demand a fresh strategy. Fight back with the spear, a new tiered weapon which deals damage based on your precision and the speed of your trusted steed. So, riders of the Overworld – mount up and lead the charge in the Mounts of Mayhem drop!

New Features

Added the Nautilus and the Zombie Nautilus mobs
Added Nautilus Armor
Added the Camel Husk mob
Added the Parched mob
Added Spear weapons
Zombie Horses now spawn naturally
Added new graphical options "Texture Filtering" and "Anisotropic Filtering"
Added Netherite Horse Armor that can be obtained by upgrading Diamond Horse Armor using a Smithing Table

Nautilus

The Nautilus is a new neutral aquatic mob
Spawns in all ocean biomes
Attacks using a Dash attack, if provoked
Occasionally attacks Pufferfish within range using the Dash attack
Takes suffocation damage on land
The Nautilus can be bred and tamed using a Pufferfish or a Bucket of Pufferfish
Despawns naturally, however becomes persistent when interacted with by a player
Has a chance to drop a Nautilus Shell when killed, with increasing chance for each level of Looting
A tamed Nautilus:
- Can be equipped with a Saddle to ride
- Has an inventory screen for managing Saddle and Armor
- Has a Dash skill similar to Camels, used by pressing the Jump button
- Adds the "Breath of the Nautilus" effect to mounted players
- With a Saddle has a roaming restriction of 16 blocks
- Without a Saddle has a roaming restriction of 32 blocks

Zombie Nautilus

The Zombie Nautilus is a new underwater mob that spawns with a Drowned rider wielding a Trident
The Zombie Nautilus is only hostile if ridden by a hostile mob
The Zombie Nautilus behaves similar to the Nautilus except that it cannot be bred
Drops 0-3 Rotten Flesh when killed, with 0-1 extra for each level of Looting

Coral Zombie Nautilus

The Zombie Nautilus has a Coral Zombie Nautilus variant that spawns in the Warm Ocean biome

Nautilus Armor

Equippable on the Nautilus and Zombie Nautilus
Comes in Copper, Golden, Iron, Diamond and Netherite versions
Copper, Iron, Golden, and Diamond Nautilus Armor now have a chance to be found in the Chests for the following Structures:
- Buried Treasure
- Ocean Ruins
- Shipwreck
Netherite Nautilus Armor is created by upgrading from Diamond Nautilus Armor using a Smithing Table

Status Effects

Added Breath of the Nautilus effect
- Pauses player oxygen consumption (but does not replenish oxygen)

Parched

The Parched is a new Skeleton variant
Spawns at light level 0 in Deserts replacing some of the regular Skeletons
Does not spawn in caves, following the Husk's spawning rules
Does not burn in sunlight
Shoots Arrows of Weakness
Is immune to the Weakness effect
Has a slower rate of fire compared to normal Skeletons, similar to Bogged
Has a chance to drop Arrows and Bones when killed, as well as Arrows of Weakness when killed by a Player

Camel Husk

1.21.11-camel_husk.jpg

The Camel Husk is a new undead Camel variant
Spawns at light level 0 in Deserts with two riders: A Husk wielding a Spear and a Parched
Does not spawn in caves, following the Husk's spawning rules
Does not burn in sunlight
Is hostile if the rider is a hostile mob
Passive without a rider
Despawns with other hostile mobs, however becomes persistent when interacted with
Can be fed Rabbit Feet to heal
Cannot be bred
Works like regular Camels when ridden
Drops 2-3 Rotten Flesh when killed, with extra 0-1 for each level of Looting

Spear Weapon

New weapon that can be crafted in Wood, Stone, Copper, Iron, Gold and Diamond versions
Also exists in a Netherite variant that is created by upgrading a Diamond Spear using a Smithing Table
Each material has different stats for timing, influencing how fast they are to use
Has a minimum reach for damage, being too close to a target will yield no damage
Has extended maximum reach compared to other tools and weapons
Bounces back visually on hit
Has two attacks: Jab and Charge
Does not cause item interact vibrations
Zombies, Husks, Zombified Piglins and Piglins can spawn with the Spear
Golden Spear is considered a preferred weapon by Piglins
Spears can be enchanted with the same Enchantments that can be used with Swords except Sweeping Edge
Spears can also be enchanted with the new Lunge Enchantment
Added various Spears to various loot chests around the world
- Iron Spears can be found in Buried Treasure chests
- Copper and Iron Spears can be found in Weaponsmith chests in villages
- Stone Spears can be found in Ocean Ruin chests
- Diamond Spears can be found in Bastion Remnant and End City chests

Jab Attack

Quick-press the primary action button to use
A low damage attack with knockback
Has a cooldown between attacks dependent on material
- Wooden Spears have the fastest cooldown; Netherite the slowest
Can hit multiple enemies
Does not destroy blocks

Charge Attack

1.21.11-spear.jpg

Press and hold the secondary action button to use
Damage is based on Spear material, the player’s view angle, and the velocity of both the player and the target
While holding down the button, the attack goes through three stages before returning to idle:
- Engaged: The Spear can deal damage, knockback, and dismount mounted enemies if the speed is above the required thresholds
- Tired: Indicated by the Spear rotating to a vertical position and shaking
  - The Spear can deal damage and knockback (but not dismount) if the speed is above the required thresholds
- Disengaged: Indicated by the Spear being lowered, pointing downwards
  - The Spear deals damage but not knockback or dismount if the speed is above the required threshold
The Spear's range when used by mobs is half of that when used by players, but they can deal damage, dismount and knockback at lower speeds than the players
Zombies, Husks, Zombified Piglins and Piglins know how to charge with a Spear

Lunge Enchantment

Spear exclusive enchantment
Only works with the Jab attack
When doing a Jab attack with Lunge, it propels the player horizontally in the view direction
The view angle needs to be perfectly leveled horizontally to achieve maximum lunge distance
Using Lunge has a durability cost of 1 for using Lunge across all Enchantment levels
Using Lunge consumes hunger points by exhausting the player, similar to sprinting or jumping
- Level 1 Lunge consumes 1 hunger point, level 2 consumes 2 hunger points, and level 3 consumes 3 hunger points
- Lunge can only be used if the player has at least 6 hunger points in their hunger bar
Does not work when the player is in water or flying with Elytra

Advancements

Added the "Mob Kabob" advancement for spearing 5 enemies with a Charge attack

Texture Filtering

New option in Video Settings
Controls the method used to sample textures when they are viewed at an angle or from a distance
Available values are "None", "RGSS", and "Anisotropic"
The default depends on your graphics preset and hardware
"RGSS" (Rotated Grid Super Sampling) is a shader-based filtering method that improves texture clarity at a moderate performance cost
- This is available on all hardware
"Anisotropic" is a hardware-based filtering method that provides the best texture clarity
- The maximum anisotropy may be "2x", "4x", and "8x", controllable by a separate slider
- If your hardware does not support it, Anisotropic Filtering will do nothing
- This significantly impacts video memory usage (especially combined with a high mipmap count)

Changes

Horses, Mules, Donkeys, and Camels no longer sink in water while ridden by a player
- Skeleton Horses are an exception - they still sink
Bats no longer spawn more frequently and in higher light levels between October 20 and November 3
Items will no longer "bob" whenever their durability changes, such as when losing durability from an attack, or repaired by Mending
Horses, Mules, Donkeys, Camels, Zombie Horses and Camel Husks will not panic if controlled by Mobs
Parrots can now mimic the sounds of Zombie Nautilus, Zombie Horse, Camel Husk and Parched
Spawn Eggs have been reorganized into groups in the Creative Inventory
Chunks now fade in instead of appearing out of nowhere, with the fade-in time adjustable through Video Settings
Changes to visuals and visual options
Updated the Main Menu background panorama
Added splash text "One does not simply walk to the Far Lands"

Developer’s Note: This statement was proven false on October 4, 2025.

Zombie Horse

Zombie Horses now spawn naturally
Zombie Horses spawn in darkness, and burn in sunlight like other undead mobs
Zombie Horses count towards the hostile mob cap and spawn with other hostile mobs
Zombie Horses do not display any hostile behavior towards players. Their hostility resides solely in their Zombie rider
Zombie Horses can be leashed when its mob jockey is removed
Zombie Horses despawn like other hostile mobs
- However, they become persistent when interacted with by a player
Zombie Horses can be tamed in the same fashion as regular Horses, and can then be mounted and controlled by a player
Zombie Horses can be healed and tempted using Red Mushrooms
Tamed Zombie Horses can be equipped with a Saddle and Horse Armor
Horse Armor protects Zombie Horses from sunlight damage
Zombie Horses have 25 health points (12.5 hearts) of health
Zombie Horses have variable movement speed and jump strength, determined when they spawn
Zombie Horses drops 2-3 Rotten Flesh when killed, with extra 0-1 for each level of Looting
Zombies riding Zombie Horses now have a chance of dropping a Red Mushroom on death

Mob Spawning

Zombie Horses now have a chance to spawn in plains and savanna biome types, with a zombie rider holding an iron spear

Advancements

Updated the "How Did We Get Here?" advancement to include the Breath of the Nautilus effect
Updated the "Best Friends Forever" advancement to include the Nautilus, Zombie Nautilus, and the Zombie Horse
Updated the "The Parrots and the Bats" advancement to include the Nautilus
Updated the "Two by Two" advancement to include the Nautilus
Updated the "Monster Hunter" advancement to include the Zombie Nautilus, the Zombie Horse, the Camel Husk and the Parched
Updated the "A Throwaway Joke", "Take Aim" and "It Spreads" advancements to include the Nautilus, the Zombie Nautilus, the Zombie Horse, the Camel Husk and the Parched
Updated the "Oh Shiny" advancement to include the Golden Spear and Golden Nautilus Armor

Items

Spawn Eggs are now sorted thematically in the Creative Inventory, according to the following categories:
- Overworld
  - Farm Animals
  - Mounts
  - Pets
  - Wild Animals
  - Aquatic
  - Miscellaneous
  - Golems
  - Villagers
  - Undead
  - Spiders
  - Monsters
  - Illagers
- Nether
- The End

Sounds

Anvil destroy, land, place and use sounds now play at a slightly lower volume

Accessibility

Keys used to access debug features can now be rebound
- It is part of a new Debug category in the Key Binds screen
- The F3 + Q keybind to display a debug help message in chat has been removed
The debug modifier key can be bound separately from the debug overlay key
The key to toggle GUI can now be rebound
The key to toggle spectator shader effects, such as when spectating an Enderman, can now be rebound

Input

Several uses of the cmd key on Mac have been rebound to ctrl:

The input modifier to drop all items
The input modifier to include all the data when picking a block
The input modifier to change GUI scale in the Video Settings screen
Stopping the recipe book from cycling through variations of items

Changes to Visuals

Graphics modes "Fast", "Fancy", and "Fabulous!" have been replaced with graphics presets with the same names
Cloud movement is now the same for all players on a server
All blocks in the world now have mipmaps applied if enabled in video settings
- Blocks that did not have mipmaps before, such as different vines, rails, foliage (apart from leaves) and more should look better from higher distances
Client FPS is expected to be higher for most players
Underwater biome fog color and fog distance is now blended based on the player's position between biomes, similarly to regular biome fog and sky colors
Environmental Fog in the Nether is no longer dependent on the render distance setting, and will consistently be applied from 10 to 96 blocks
The color of the sky during sunrises and sunsets is now affected by rain and thunder
When the "See-Through Leaves" video setting is disabled, the gaps between leaves are now dark green instead of black
Turning the "See-Through Leaves" video setting off now gives a bigger performance boost than before

Graphics Presets

Settings on the Video Settings screen have been reordered and split into 3 sections: "Display", "Quality & Performance", and "Preferences"
The following settings that were duplicating accessibility settings have been removed from the Video Settings screen:
- "View Bobbing"
- "Glint Speed"
- "Glint Strength"
- "FOV Effects"
- "Distortion Effects"
Tweaks that were previously hidden behind the "Graphics" setting have been split out to be configurable independently:
- "See-Through Leaves"
- "Show Vignette"
- "Weather Effect Radius" configures the distance in blocks within which rain and snow are visible
- "Improved Transparency" resolves some of the transparent geometry rendering issues at a significant GPU cost, previously was hidden behind "Fabulous!"
A new "Preset" slider was added to the top of the "Quality & Performance" section
- Presets, as you would expect based on gaming industry standard, control most of the "Quality & Performance" settings at once, not only the ones that were previously hidden behind the "Graphics" setting
- Available presets are "Fast", "Fancy", "Fabulous!" and "Custom"
- The default preset is "Fancy" for new players
- But for players who are upgrading to this version the preset will be set to "Custom" to preserve your current configuration

Debug Renderer Changes

Same as before, do not treat debug renderers as supported features, they are there only to aid with development
More debug renderers are now available through the Debug Settings screen
Some existing renderers were improved
The performance of debug renderers has been significantly improved

UI

Menu sliders will now "stick" to the closest available value when you release them after dragging with a mouse
When using the keyboard to change slider values, the arrow keys will now move the slider to the next available value, not by one pixel as before
The inF3 button in the Debug Option screen has been renamed to inOverlay
The Single Biome Customization screen now has a search box
The language selection screen now has a search box to filter languages
Renamed the "Show Music Toast" option to "Music Toast"
- Added a third state to the "Music Toast" option, allowing it to only be shown in the pause menu

Technical Changes

The Data Pack version is now 94.1
The Resource Pack version is now 75.0
The Minecraft Server Management Protocol version is now 2.0.0
Added ClientFps JFR event
Experience packets that do not change the player's experience progress or level are no longer sent by the server
Added support for KQueue on OSX to improve network connection performance

Minecraft Server Management Protocol Version 2.0.0

Added a new notification server/activity
- Indicates that a network connection to the server has been initiated
- Rate limited to 1 notification per 30 seconds
Enable authentication from web browsers
- Authenticate by passing the token in Sec-WebSocket-Protocol header when opening the WebSocket connection
  - Example: Sec-WebSocket-Protocol: minecraft-v1, <token>
- Requests authenticating this way are subject to Origin header checks. This requires configuration of allowed origins on the server side using management-server-allowed-origins. The default value is empty, meaning Sec-Websocket-Protocol authentication is effectively disabled
In the typed_game_rule and untyped_game_rule schemas, the type of the value field has been changed from string to take either a boolean or an integer
- Also, it now uses the namespaced ID of game rule as the key

Data Pack Versions 89.0 through 94.1

Added stopwatch command for keeping track of real time
Certain visual and gameplay effects can now be controlled by Environment Attributes
World Border interpolation is now dependent on game ticks instead of real time
- This means the World Border will no longer move when the game is paused
- It will also respect any changes made by the /tick command
Changed loot function filtered to allow running modification when predicate fails
Added discard loot function
Added data-driven Zombie Nautilus variants
Item textures were split out of the blocks atlas into a separate new items atlas
- It means that the commands that were referencing the blocks atlas for item textures now need to reference the items atlas instead

Zombie Nautilus Variants

Zombie Nautilus variants can be data-driven by adding entries to data/<namespace>/zombie_nautilus_variant/<id>.json
This feature is experimental
Fields in file:
- model - one of: normal, warm
- asset_id - namespaced id for this variant asset, resolves to assets/<namespace>/textures/<path>.png
- spawn_conditions - a variant selection rule

Commands

Resource suggestions now show results in any namespace instead of just within minecraft

Added stopwatch

New command that allows the creation of a Stopwatch that keeps track of real time
Stopwatches do not depend on game ticks
They only run when the server/world is running, even when paused

Syntax:

stopwatch create <id> - creates a Stopwatch with the given namespaced ID
stopwatch query <id> [<scale>] - shows the elapsed time of the given Stopwatch in seconds and returns it scaled by the given value and truncated
- Default scale: 1
stopwatch restart <id> - restarts the given Stopwatch
stopwatch remove <id> - removes the given Stopwatch

Changes to execute

Added new syntax /execute if|unless stopwatch <id> <range>
Allows to compare the elapsed time of a given Stopwatch with a floating point value range
- The Stopwatch value is measured in seconds and has an accuracy of at most a millisecond
- Example: /execute if stopwatch foo:bar ..10 run say Stopwatch foo:bar has not reached 10 seconds yet

Changes to worldborder

The time arguments now specify ticks by default, but can also specify seconds or in-game days using an s or d suffix

Game Rules

Game rules have been moved into a registry. With that, all game rules have been renamed from their previous camel case names to namespaced IDs in snake case.

Additionally, the following game rules have been further renamed:

announceAdvancements -> minecraft:show_advancement_messages
commandBlocksEnabled -> minecraft:command_blocks_work
command_modification_block_limit -> minecraft:max_block_modifications
disableElytraMovementCheck -> minecraft:elytra_movement_check
- The value is inverted accordingly
disablePlayerMovementCheck -> minecraft:player_movement_check
- The value is inverted accordingly
disableRaids -> minecraft:raids
- The value is inverted accordingly
doDaylightCycle -> minecraft:advance_time
doEntityDrops -> minecraft:entity_drops
doImmediateRespawn -> minecraft:immediate_respawn
doInsomnia -> minecraft:spawn_phantoms
doLimitedCrafting -> minecraft:limited_crafting
doMobLoot -> minecraft:mob_drops
doMobSpawning -> minecraft:spawn_mobs
- Mobs no longer spawn during chunk generation when the minecraft:spawn_mobs game rule is set to false
doPatrolSpawning -> minecraft:spawn_patrols
doTileDrops -> minecraft:block_drops
doTraderSpawning -> minecraft:spawn_wandering_traders
doVinesSpread -> minecraft:spread_vines
doWardenSpawning -> minecraft:spawn_wardens
doWeatherCycle -> minecraft:advance_weather
maxCommandChainLength -> minecraft:max_command_sequence_length
maxCommandForkCount -> minecraft:max_command_forks
naturalRegeneration -> minecraft:natural_health_regeneration
snowAccumulationHeight -> minecraft:max_snow_accumulation_height
spawnRadius -> minecraft:respawn_radius
spawnerBlocksEnabled -> minecraft:spawner_blocks_work

Limits

Some game rules that previously did not have a limited value range now do:

minecraft:max_block_modifications: Minimum 1
minecraft:max_command_forks: Minimum 1
minecraft:max_command_sequence_length: Minimum 0
minecraft:max_entity_cramming: Minimum 0
minecraft:max_snow_accumulation_height: Minimum 0, maximum: 8
minecraft:players_nether_portal_creative_delay: Minimum 0
minecraft:players_nether_portal_default_delay: Minimum 0
minecraft:players_sleeping_percentage: Minimum 0
minecraft:random_tick_speed: Minimum 0
minecraft:respawn_radius: Minimum 0

Added minecraft:fire_spread_radius_around_player

Controls the maximum distance in blocks that fire can spread around a player
- This replaces the previous doFireTick and allowFireTicksAwayFromPlayer game rules, which have now been removed
- Setting it to 0 will disable fire spreading
- Setting it to -1 will allow fire spreading without players around
- Limit: Minimum -1

Game Tests

In the game_rules test environment the keys bool_rule and int_rule have been replaced with a single key rules. It is a map from namespaced game rule ID to the game rules value. The value type is either integer or boolean depending on the game rule.

Timelines

Timelines are a new concept defined in data packs under the timeline registry (i.e. found under data/<namespace>/timeline/<id>.json).

Timelines specify game behavior based on the absolute day time (that which is set by /time set). Timelines optionally can specify a period over which they will be repeated.

Primarily, Timelines are able to modify game behavior or visuals by applying Environment Attribute modifiers.

Format: object with fields

period_ticks: optional integer, defines the duration in ticks over which the timeline will repeat
- If not specified, the timeline will not repeat
tracks: optional map between Environment Attribute IDs and a corresponding Environment Attribute Track object
- See the section on Environment Attributes below for details

Timelines by default have no effect unless they are included by a dimension - see the Dimension Types section below.

Environment Attributes

Environment Attributes provide a data-driven way to control a variety of visual and gameplay systems.

Each Environment Attribute controls a specific visual or gameplay effect: for example, minecraft:visual/sky_color controls the color of the sky, and minecraft:gameplay/water_evaporates controls whether water can be placed at a given location.

Developer’s Note: This system and many of the introduced attributes should be considered very experimental, and may still change significantly in coming snapshots and releases. In the meantime, we would as always love to hear any feedback or suggestions you may have!

Sources

Environment Attribute values can be provided by the following Environment Attribute sources (in order of low to high priority):

Dimensions
Biomes
Timelines
Weather (not data-driven)

While Biomes act as a source to modify an attribute by position, Timelines can modify an attribute based on time.

The "effective" value of the Environment Attribute (i.e. what will actually show up in game) will be some combination of the values provided by each source according to their priority.

For example, in the following scenario:

The overworld dimension provides sky_color = #00ff00 (green)
The plains biome provides sky_color = #ff0000 (red)

When the player is in the plains biome, they will see the red sky_color, while anywhere else in the overworld they will see green.

When an Environment Attribute source provides an Environment Attribute, it can:

Override the value, such as the plains biome overriding the overworld's sky_color in the above scenario
Apply a modifier to a previous value (see section on Modifiers below)

1.21.11-environment_attributes.jpg

Modifiers

As described in the above example, an Environment Attribute source may simply override the value of a particular attribute. However, it is sometimes also desirable to rather apply a modifier to a value provided by a source with lower priority.

For example, in the following scenario:

The overworld dimension provides water_fog_end_distance = 96.0
The plains biome modifies water_fog_end_distance with a multiply modifier of 0.85

When in the plains biome, the water_fog_end_distance will be resolved to 96.0*0.85 = 81.6, while in any other Overworld biome, it will resolve to 96.0.

Which kinds of modifiers are available depends on the type of Environment Attribute. The most basic modifier, supported by every Environment Attribute, is the override modifier. This behaves purely as an override of the preceding value. If not specified by an Environment Attribute source, the modifier will always be assumed to be override.

Full descriptions of the available modifiers and their behaviors can be found in the Common Modifiers section below.

Interpolation

While modifiers describe how a value provided by one source is applied on the value from a preceding source, interpolation describes the combination of values within a source. Only some Environment Attributes support interpolation. This allows for the smooth transition between two or more values, such as when moving between two biomes.

Between multiple Biomes, interpolation is performed on values from a source after modifiers have been applied. Within a Timeline, interpolation is performed on the modifier arguments before they get applied.

Biomes

For example, in the following scenario:

The plains biome provides sky_color = #ff0000 (red)
The desert biome provides sky_color = #ffff00 (yellow)

sky_color is one such attribute that will transition smoothly based on position: for example, in the above scenario, as a player moves from a plains to a desert biome, the sky color will gradually shift from red to yellow. Other attributes, such as water_evaporates, represent discrete values and will not be smoothly transitioned - only the biome exactly at a subject position will be considered.

Smooth transitions between biomes are based on the biomes within an 8 block radius of the camera. Biomes that occupy a larger portion of that radius and are closer to the camera will have a stronger influence on the final interpolated value.

Timelines

Timelines can define Attribute Tracks - these specify how a modifier for a particular Environment Attribute changes over time by defining keyframes. Depending on the attribute, interpolation may be used between each keyframe. If interpolation is not used, the previous keyframe value will always be selected.

For example, a Timeline with a period of 24000 might be set up as following:

At time = 0, the timeline provides sky_color = #ff0000 (red)
At time = 1000, the timeline provides sky_color = #ff0000 (red)
At time = 6000, the timeline provides sky_color = #ff00ff (magenta)

Between time = 0 and time = 1000, the sky color will be red. Between 1000 and 6000, it will shift from red to magenta. Then, from 6000 all the way until the timeline repeats and reaches time = 0 again, the color will slowly shift back to red.

Note: unlike biomes, if a Timeline uses a modifier instead of an override, interpolation is applied to the modifier arguments rather than the final modified values.

Environment Attribute Map

Dimension Type and Biome definitions contain a new attributes field, enabling them to define Environment Attributes.

This map generally takes the form of an object mapping between Environment Attribute IDs and their corresponding values, for example:

"attributes": {
    "minecraft:visual/fog_color": "#ffaa00",
    "minecraft:gameplay/water_evaporates": true
}

Values defined as above will always be assumed to use the override modifier.

The value object can however be expanded in order to express different modifiers, in the format of an object with the following fields:

modifier: optional string modifier ID, dependent on the Attribute Type (see the Common Modifiers section below)
- Default: override
argument: the modifier argument (format dependent on the chosen modifier)
- How the argument is used also depends on the type of modifier

For example, the following definition describes multiplying water_fog_end_distance by 85%:

"attributes": {
    "minecraft:visual/water_fog_end_distance": {
        "modifier": "multiply",
        "argument": 0.85
    }
}

Attribute Track

An Attribute Track specified within a Timeline takes the format of an object with the following fields:

ease - optional Easing Type (see below), used to ease the interpolation of the value between keyframes
- Default: linear
- If the target attribute does not support interpolation, the easing mode will have no effect
keyframes - list of keyframe objects, must be ordered by the ticks field:
- ticks - integer between 0 and period_ticks (if specified), defines the tick (within the period) at which this keyframe's value will be active
- value - the modifier argument (format dependent on the chosen modifier)
  - If no modifier is specified (or override is used), the type of this field is the same as the Environment Attribute itself
  - How this value is used depends on the type of modifier
- Note: at most two keyframes can be placed on the same tick, creating an immediate transition
modifier - optional string modifier ID, dependent on the Attribute Type (see the Common Modifiers section below)
- Default: override

For example, the following Timeline has a period of 24000, and has an attribute track that modifies only minecraft:gameplay/cat_waking_up_gift_chance. Because the easing is constant, between tick 362 and 23667 the value is 0.0, while between tick 23667 and 362 it is 0.7.

Like other Environment Attribute sources, the specified value is used as the argument to the specified modifier. This is then applied on top of sources with a lower priority. In this case the modifier is maximum, so this timeline will only ever increase the value of cat_waking_up_gift_chance to the value specified in the track.

{
    "period_ticks": 24000,
    "tracks": {
        "minecraft:gameplay/cat_waking_up_gift_chance": {
            "ease": "constant",
            "modifier": "maximum",
            "keyframes": [
                { "ticks": 362,   "value": 0.0 },
                { "ticks": 23667, "value": 0.7 }
            ]
        }
    }
}

Easing Types

Easing Types control the interpolation between two keyframes by applying a curve. The following built-in Easing Types are provided:

constant - always selects the previous keyframe
linear
in_back
in_bounce
in_circ
in_cubic
in_elastic
in_expo
in_quad
in_quart
in_quint
in_sine
in_out_back
in_out_bounce
in_out_circ
in_out_cubic
in_out_elastic
in_out_expo
in_out_quad
in_out_quart
in_out_quint
in_out_sine
out_back
out_bounce
out_circ
out_cubic
out_elastic
out_expo
out_quad
out_quart
out_quint
out_sine

An Easing Type may also be specified with a Cubic Bézier in the format: { "cubic_bezier": [ x1, y1, x2, y2 ] }

x1: float between 0 and 1, x-coordinate of the first control point
y1: float, y-coordinate of the first control point
x2: float between 0 and 1, x-coordinate of the second control point
y2: float, y-coordinate of the second control point

Developer's Note: To play around with and visualize easings, easings.net and cubic-bezier.com are great references!

Common Data Types

In addition to common primitive formats like floats and booleans, the following data types are reused in various parts of the Environment Attributes system and will be referenced in sections below.

RGB Color

Format can be one of the following:

A hex color RGB string, in the form #rrggbb
A float array with 3 components, between 0 and 1, in the form [r, g, b]
An integer in packed RGB form

ARGB Color

Format can be one of the following:

A hex color ARGB string, in the form #aarrggbb
A float array with 4 components, between 0 and 1, in the form [a, r, g, b]
An integer in packed ARGB form

Particle Options

A full definition of a particle, including any type-specific properties (as in the /particle command).

For example:

{
  "type": "minecraft:block_crumble",
  "block_state": {
    "Name": "minecraft:dirt"
  }
}

Mob Activity

A string ID from the minecraft:activity built-in registry. One of:

minecraft:core
minecraft:idle
minecraft:work
minecraft:play
minecraft:rest
minecraft:meet
minecraft:panic
minecraft:raid
minecraft:pre_raid
minecraft:hide
minecraft:fight
minecraft:celebrate
minecraft:admire_item
minecraft:avoid
minecraft:ride
minecraft:play_dead
minecraft:long_jump
minecraft:ram
minecraft:tongue
minecraft:swim
minecraft:lay_spawn
minecraft:sniff
minecraft:investigate
minecraft:roar
minecraft:emerge
minecraft:dig

Common Modifiers

Every Environment Attribute has a specific value type, which describes how values must be defined as well as what modifiers are available and how they are interpolated. Some are very specific, while others are reused across many attributes.

Although this is not an exhaustive list, the following Attribute Types are used commonly across many Environment Attributes:

Modifiers on Boolean Values

Argument format: boolean

override
and
nand
or
nor
xor
xnor

Modifiers on Float Values

Argument format: float

override
add
subtract
multiply
minimum
maximum
alpha_blend
- Modifies subject according to: result = lerp(alpha, subject, value)
- Argument format: object with fields:
  - value: float to blend towards
  - alpha: float between 0 and 1

Modifiers on RGB Color Values

override
- Argument format: RGB Color
add - component-wise additive color blending
- Argument format: RGB Color
subtract - component-wise subtractive color blending
- Argument format: RGB Color
multiply - component-wise multiplicative color blending
- Argument format: RGB Color
- If specified, the alpha component is multiplied independently just like the other color channels
alpha_blend - traditional alpha blending that might be seen in image editing software
- Argument format: ARGB Color
- When the argument alpha is 1, it will behave as an override with no blending
blend_to_gray - modifies a color by taking its grayscale form, applying a brightness modifier, and mixing with this using some factor
- Where gray = brightness * (0.3 * red + 0.59 * green + 0.11 * blue), result = lerp(factor, subject, [gray, gray, gray])
- Argument format: object with fields:
  - brightness: float between 0 and 1, a multiplier to apply to the grayscale value
  - factor: float between 0 and 1, the factor to mix with

Modifiers on ARGB Color Values

override
- Argument format: ARGB Color
add - component-wise additive color blending
- Argument format: RGB Color
subtract - component-wise subtractive color blending
- Argument format: RGB Color
multiply - component-wise multiplicative color blending
- Argument format: RGB or ARGB Color
- If specified, the alpha component is multiplied independently just like the other color channels
alpha_blend - traditional alpha blending that might be seen in image editing software
- Argument format: ARGB Color
- When the argument alpha is 1, it will behave as an override with no blending
blend_to_gray - same as for RGB Color

New Environment Attributes

minecraft:visual/fog_color

The color of fog (when the camera is not submerged in another substance).

Value type: RGB color
Default value: #000000
Modifiers: RGB Color Modifiers
Interpolated: yes
Resolved at the camera's position
Replaces Biome effects.fog_color field

minecraft:visual/fog_start_distance

The distance in blocks from the camera at which fog starts to have an effect (when the camera is not submerged in another substance). If negative, the fog will start out with density as if it had started that many blocks behind the camera.

Value type: float
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/fog_end_distance

The distance in blocks from the camera at which fog reaches its maximum density (when the camera is not submerged in another substance).

Value type: non-negative float
Default value: 1024.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/sky_fog_end_distance

The distance in blocks from the camera at which the fog that affects the sky reaches its maximum density (when the camera is not submerged in another substance). Only visible with the overworld skybox type.

Note: this value is restricted by the Render Distance option.

Value type: non-negative float
Default value: 512.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/cloud_fog_end_distance

The distance in blocks from the camera at which the fog that affects clouds reaches its maximum density (when the camera is not submerged in another substance).

Note: this value is restricted by the Cloud Distance option.

Value type: non-negative float
Default value: 2048.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/water_fog_color

The color of fog when submerged in water.

Value type: RGB color
Default value: #050533
Modifiers: RGB Color Modifiers
Interpolated: yes
Resolved at the camera's position
Replaces Biome effects.water_fog_color field

minecraft:visual/water_fog_start_distance

The distance in blocks from the camera at which underwater fog starts to have an effect. If negative, the fog will start out with density as if it had started that many blocks behind the camera.

Value type: float
Default value: -8.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/water_fog_end_distance

The distance in blocks from the camera at which underwater fog reaches its maximum density.

Note: the final value is also modified by how long the player has been underwater.

Value type: non-negative float
Default value: 96.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position
Replaces #has_closer_water_fog Biome Tag

minecraft:visual/sky_color

The color of the sky. This color is only visible for the overworld sky. Only visible with the overworld skybox type.

Value type: RGB color
Default value: #000000
Modifiers: RGB Color Modifiers
Interpolated: yes
Resolved at the camera's position
Replaces Biome effects.sky_color field

minecraft:visual/cloud_color

The color of the clouds. If fully transparent, clouds are entirely disabled and Happy Ghasts will not regenerate health faster when at cloud height.

Value type: ARGB color
Default value: #00000000
Modifiers: ARGB Color Modifiers
Interpolated: yes
Resolved at the camera's position for rendering, or at the position of a Happy Ghast for regeneration

minecraft:visual/cloud_height

The height at which all clouds appear.

Value type: float
Default value: 192.33
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position for rendering, or at the position of a Happy Ghast for regeneration
Replaces Dimension Type cloud_height field

minecraft:visual/default_dripstone_particle

The default particle to be dripped from Dripstone blocks when no fluid is placed above.

Value type: Particle Options
Default value: {type:"minecraft:dripping_dripstone_water"}
Modifiers: override
Interpolated: no
Resolved at the position of the Dripstone block
Replaces Dimension Type ultrawarm field

minecraft:visual/ambient_particles

Controls ambient particles that randomly spawn around the camera.

Value type: list of objects with fields
- particle: Particle Options to spawn
- probability: float between 0 and 1, the probability to spawn the particle in an empty space when randomly ticked
Default value: []
Modifiers: override
Interpolated: no
Resolved at the camera's position
Replaces Biome effects.particle field

minecraft:visual/sunrise_sunset_color

Controls the color and intensity of the sunrise and sunset effect. If fully transparent, no sunrise or sunset will be rendered. Only visible with the overworld skybox type.

Value type: ARGB Color
Default value: "#00000000"
Modifiers: ARGB Color Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/sun_angle

The angle in degrees of the sun, clockwise from east to west, with 0 being directly up.
Only visible with the overworld skybox type.

Value type: float, angle in degrees
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/moon_angle

The angle in degrees of the moon, clockwise from east to west, with 0 being directly up. Only visible with the overworld skybox type.

Value type: float, angle in degrees
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/star_angle

The angle in degrees of the stars, clockwise from east to west, with 0 being directly up. Only visible with the overworld skybox type.

Value type: float, angle in degrees
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/moon_phase

The phase of the moon. Only visible with the overworld skybox type.

Value type: string id, one of:
- full_moon
- waning_gibbous
- third_quarter
- waning_crescent
- new_moon
- waxing_crescent
- first_quarter
- waxing_gibbous
Default value: "full_moon"
Modifiers: override
Interpolated: no
Resolved at the camera's position

minecraft:visual/star_brightness

The brightness of the stars in the sky, where 0.5 is the normal brightness during the night and 0 is fully hidden. Only visible with the overworld skybox type.

Value type: float between 0 and 1
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/sky_light_color

The visual color of sky light. For blocks with a sky light level of 0 (or minecraft:visual/sky_light_factor is 0), this will have no effect. This is the value passed to the lightmap.fsh shader as SkyLightColor.

Value type: RGB Color
Default value: "#ffffff"
Modifiers: RGB Color Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:visual/sky_light_factor

The visual brightness of sky light. minecraft:visual/sky_light_color is multiplied by this value. This is the value passed to the lightmap.fsh shader as SkyFactor.

The corresponding gameplay effect is controlled entirely by minecraft:gameplay/sky_light_level.

Value type: float
Default value: 1.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the camera's position

minecraft:audio/background_music

Controls how and which background music is played.

Value type: object with fields
- default: optional object with fields:
  - sound: Sound Event to play
  - min_delay: int, minimum delay in ticks between tracks
  - max_delay: int, maximum delay in ticks between tracks
  - replace_current_music: optional boolean, whether this track can replace whatever is currently playing
    - Default: false
  - If not defined and not overridden, no music will start playing while this attribute is active
- underwater: optional object with fields in the same format as default - if present and the player is underwater, will override default
- creative: optional object with fields in the same format as default - if present and the player is in Creative Mode, will override default
Default value: {}
Modifiers: override
Interpolated: no
Resolved at the camera's position
Replaces Biome effects.music field

minecraft:audio/music_volume

The volume at which music should play. Any music playing will fade over time to this value.

Value type: float between 0 and 1
Default value: 1.0
Modifiers: Float Modifiers
Interpolated: no
Resolved at the camera's position
Replaces Biome effects.music_volume field

minecraft:audio/ambient_sounds

Controls which ambient sounds are played around the camera, and when.

Value type: object with fields
- loop: optional Sound Event, sound to be continually looped
- mood: object with fields, sounds that will be randomly played based on surrounding darkness
  - sound: Sound Event to play
  - tick_delay: int, the number of ticks between mood sounds, assuming a light level of 0
  - block_search_extent: int, the radius in which light levels are sampled
  - offset: double, an additional distance offset to apply to sounds produced
- additions: list of objects with fields, sounds that will be randomly played
  - sound: Sound Event to play
  - tick_chance: float between 0 and 1, probability within a tick to play a given sound
Default value: {}
Modifiers: override
Interpolated: no
Resolved at the camera's position
Replaces Biome effects.ambient_sound, effects.mood_sound, and effects.additions_sound fields

minecraft:audio/firefly_bush_sounds

If true and not below an opaque block, Firefly Bushes will produce idle sounds.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of a Firefly Bush

minecraft:gameplay/can_start_raid

If false, a Raid cannot be started by a player with Raid Omen.

Value type: boolean
Default value: true
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position that the Raid would be started
Replaces Dimension Type has_raids field

minecraft:gameplay/water_evaporates

If true, Water cannot be placed with a Bucket, melting Ice will not produce water, Wet Sponge will dry out when placed, and Dripstone will not produce water from Mud blocks.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of the interaction
Replaces Dimension Type ultrawarm field

minecraft:gameplay/bed_rule

Controls whether a Bed can be used to sleep, and whether it can be used to set a respawn point.

Value type: object with fields
- can_sleep: one of:
  - always - the Bed can always be used to sleep (assuming the Bed is not obstructed and there are no monsters nearby)
  - when_dark - the Bed can only be used to be sleep when the global skylight level is less than or equal 11
  - never - the Bed can never be used to sleep
- can_set_spawn - same as can_sleep
- explodes - optional boolean, if true the Bed will explode when interacted with
  - Default: false
- error_message: optional Text Component, the message to show if the player is unable to sleep or set their spawn
Default value: {can_sleep:"when_dark",can_set_spawn:"always",error_message:{translate:"block.minecraft.bed.no_sleep"}}
Modifiers: override
Interpolated: no
Resolved at the head position of the Bed block
Replaces Dimension Type bed_works field

minecraft:gameplay/respawn_anchor_works

Controls whether Respawn Anchors can be used to set spawn (or respawn). If false, the Respawn Anchor will explode once charged.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of the Respawn Anchor block
Replaces Dimension Type respawn_anchor_works field

minecraft:gameplay/nether_portal_spawns_piglin

Controls whether Nether Portal blocks can spawn Piglins.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of a random Nether Portal block
Replaces Dimension Type natural field

minecraft:gameplay/fast_lava

Controls whether Lava should spread faster and further, as well as have a stronger pushing force on entities when flowing.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved for a whole dimension (cannot be specified on a Biome)
Replaces Dimension Type ultrawarm field

minecraft:gameplay/increased_fire_burnout

Controls whether Fire blocks burn out more rapidly than normal.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of the burning Fire block
Replaces #increased_fire_burnout Biome Tag

minecraft:gameplay/piglins_zombify

Controls whether Piglins and Hoglins should zombify.

Value type: boolean
Default value: true
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of the zombifying entity
Replaces Dimension Type piglin_safe field

minecraft:gameplay/snow_golem_melts

Controls whether a Snow Golem should be damaged.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of the Snow Golem
Replaces #snow_golem_melts Biome Tag

minecraft:gameplay/sky_light_level

The effective light level of the sky used by mechanics such as mob spawning or Daylight Detectors. For example, a block fully exposed to the sky will be considered to have a light level of exactly this value, while a block deep in a cave will not be affected at all.

The corresponding visual effect is controlled entirely by minecraft:visual/sky_light_factor.

Value type: float
Default value: 15.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved for a whole dimension (cannot be specified on a Biome)

minecraft:gameplay/eyeblossom_open

Controls how Eyeblossoms change states.

Value type: one of:
- true - Closed Eyeblossoms will eventually open by random block ticks
- false - Open Eyeblossoms will do the opposite
- "default" - Open or Closed Eyeblossoms will remain in their current state
Default value: "default"
Modifiers: override
Interpolated: no
Resolved at the Eyeblossom block's position

minecraft:gameplay/turtle_egg_hatch_chance

The chance that a Turtle Egg block will switch to its next hatching state when randomly ticked.

Value type: float between 0 and 1
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the Turtle Egg block's position

minecraft:gameplay/creaking_active

While true, Creaking Heart blocks (and their corresponding Creaking) will become active. On the other hand, when false, it will enter its dormant state.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the Creaking Heart block's position

minecraft:gameplay/surface_slime_spawn_chance

An additional chance rolled when a natural Slime spawn attempt occurs in a biome with the #allows_surface_slime_spawns tag.

Value type: float between 0 and 1
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the position of the Slime spawn attempt

minecraft:gameplay/cat_waking_up_gift_chance

The chance that a Cat lying on its owner's Bed will drop a gift (from the gameplay/cat_morning_gift loot table) when the player wakes up.

Value type: float
Default value: 0.0
Modifiers: Float Modifiers
Interpolated: yes
Resolved at the Cat's position

minecraft:gameplay/bees_stay_in_hive

When true, Bees will try to navigate to their Hives and will not exit unless the Hive is broken or next to a Fire.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at a Bee or Bee Hive block's position

minecraft:gameplay/monsters_burn

When true, monsters will burn while exposed to the sky and the mob is not in water or in rain.

Value type: boolean
Default value: false
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the monster's position

minecraft:gameplay/can_pillager_patrol_spawn

When true, Pillager Patrols are able to spawn.

Note: the global skylight level must also be greater than 11.

Value type: boolean
Default value: true
Modifiers: Boolean Modifiers
Interpolated: no
Resolved at the position of the patrol spawn attempt
Replaces the #without_patrol_spawns biome tag

minecraft:gameplay/villager_activity

Controls the default AI activity for adult Villagers.

Not all activities are supported by Villager AI - if an unsupported one is chosen, the Villager will do nothing. The following activities are supported:

core
hide
idle
meet
panic
pre_raid
raid
rest
work
Value type: Mob Activity
Default value: "minecraft:idle"
Modifiers: override
Interpolated: no
Resolved at the Villager's position

minecraft:gameplay/baby_villager_activity

Controls the default AI activity for baby Villagers.

Not all activities are supported by Villager AI - if an unsupported one is chosen, the Villager will do nothing. The following activities are supported:

core
hide
idle
meet
panic
play
pre_raid
raid
rest
Value type: Mob Activity
Default value: "minecraft:idle"
Modifiers: override
Interpolated: no
Resolved at the Villager's position

Data Components

Added food properties to the following fish bucket items:

minecraft:cod_bucket
minecraft:salmon_bucket
minecraft:pufferfish_bucket
minecraft:tropical_fish_bucket

Added minecraft:zombie_nautilus/variant

Controls the variant of a Zombie Nautilus mob
Format: namespaced id of an entry in the zombie_nautilus_variant registry

Added minecraft:use_effects

Controls how the player behaves when using an item (right mouse click)
Format: object with fields
- can_sprint: boolean, whether the player can sprint while using this item
  - Default value: false
- interact_vibrations: boolean, whether using this item emits minecraft:item_interact_start and minecraft:item_interact_finish game events
  - Default value: true
- speed_multiplier: float (0.0 to 1.0), the speed multiplier applied to the player while using this item
  - Default value: 0.2
- e.g. use_effects={can_sprint:true,speed_multiplier:1.0}

Added minecraft:minimum_attack_charge

Sets the minimum attack charge on the attack indicator required to attack with this item
Format: float (0.0 to 1.0)
- 0.0: no charge required
- 1.0: full charge required

Added minecraft:damage_type

Specifies the type of damage this item deals
Format: namespaced ID of the damage type to use
- e.g. damage_type='minecraft:spear'

Added minecraft:attack_range

Enables a custom attack range when using the item.
Overrides the normal entity interaction range for the player.
Regular melee attack range is computed for Mobs based on the distance of the target hitbox to their hitbox. This component modifies that distance check by adjusting minimum and maximum padding for the attack hitbox.
Mobs using minecraft:kinetic_weapon will have their attack range applied in the same way it applies to players
Format: object with fields
- min_reach: float, the minimum distance in blocks from the attacker to the target to be considered valid
  - Default value: 0.0, valid from 0.0 to 64.0
- max_reach: float, the maximum distance in blocks from the attacker to the target to be considered valid
  - Default value: 3.0, valid from 0.0 to 64.0
- min_creative_reach: float, the minimum distance in blocks from the Creative Mode attacker to the target to be considered valid
  - Default value: 0.0, valid from 0.0 to 64.0
- max_creative_reach: float, the maximum distance in blocks from the Creative Mode attacker to the target to be considered valid
  - Default value: 5.0, valid from 0.0 to 64.0
- hitbox_margin: float, the margin applied to the target bounding box when checking for valid hitbox collision
  - Default value: 0.3, valid from 0.0 to 1.0
- mob_factor: float, the multiplier applied to the min_range and max_range when checking for valid distance when the item is used by a mob
  - Default value: 1.0, valid from 0.0 to 2.0

Added minecraft:kinetic_weapon

Enables a charge-type attack when using the item (primarily for Spears), where, while being used, the damage is dealt along a ray every time an entity comes in contact with it, with the damage based on the relative speed of the entities
Format: object with fields
- contact_cooldown_ticks: integer, the cooldown in ticks after hitting, and losing contact with an entity before being able to hit it again
  - Default value: 10
- delay_ticks: integer, the time in ticks required before the weapon is effective
  - Default value: 0
- dismount_conditions, knockback_conditions, damage_conditions: indicating the condition to apply dismount, knockback and damage effects respectively. Objects with fields:
  - max_duration_ticks: integer, the ticks after which the condition is no longer checked. This starts after delay has elapsed
  - min_speed: float, the minimum speed of the attacker, in blocks per second, along the direction that the attacker is looking
    - Optional, default value: 0.0
  - min_relative_speed: float, the minimum relative speed between the attacker and target, in blocks per second, along the direction that the attacker is looking
    - Optional, default value: 0.0
- forward_movement: float, the distance the item moves out of hand during animation
  - Default value: 0.0
- damage_multiplier: float, the multiplier for the final damage from the relative speed
  - Default value: 1.0
- sound: Optional Sound Event to play when the weapon is engaged
- hit_sound: Optional Sound Event to play when the weapon hits an entity
- e.g. kinetic_weapon={forward_movement:1.0,delay:20,damage_conditions:{max_duration:60},knockback_conditions:{max_duration:40},dismount_conditions:{max_duration:20}}
The damage dealt is calculated as floor(relative_speed * velocity_multiplier) where relative_speed is the difference of speed vectors of the attacker and the target as projected onto the axis of the attacker's view vector
- Any additional damage from enchantments or attribute modifiers is added after this calculation

Added minecraft:piercing_weapon

Enables a quick attack that damages multiple entities along a ray (primarily for Spears)
Format: object with fields
- deals_knockback: boolean, whether the attack deals knockback
  - Default value: true
- dismounts: boolean, whether the attack dismounts the target
  - Default value: false
- sound: Optional Sound Event to play when a player attacks with the weapon
- hit_sound: Optional Sound Event to play when the weapon hits an entity
- e.g. piercing_weapon={dismounts:true}

Added minecraft:swing_animation

Specifies the swing animation to play when attacking or interacting using this item
Format: object with fields
- type: string, the animation identifier (none, whack, stab)
  - Default value: whack
- duration: integer, the duration in ticks
  - Default value: 6
- e.g. swing_animation={type:'stab',duration:20}

Changed minecraft:consumable

The animation field has been updated:
- Renamed spear to trident
- Added new spear animation

Changed minecraft:intangible_projectile

Items with this component now show information about it in their tooltip

Entity Data

The AngryAt field has been renamed to angry_at
The AngerTime field has been removed
An anger_end_time (long) field has been added, containing the time anger ends in game ticks

Advancements

Added new spear_mobs trigger with fields:
- player: optional entity predicate, the player using the kinetic weapon
- count: optional integer, the number of mobs hit in a single use of the kinetic weapon

Damage Types

Added a new minecraft:spear damage type

Slot Sources

Added slot sources to allow the location of any inventory slot to be specified within datapacks
Format: object with fields
- type: the slot source type
- <type-specific>: additional fields depending on the type

minecraft:empty Type

Empty selection containing no slots

minecraft:group Type

Merges several slot sources into one, with the resulting selection containing all slots from each slot source provided
- If a slot is included in more than one slot source, it will be repeated in the resulting slot source
- e.g. [a, b] + [c, a] -> [a, b, c, a]
Format:
- terms: list of slot sources to join
Can alternatively be written inline as a list of slot sources

minecraft:slot_range Type

Selects slots within a slot range from the inventory of an entity or block entity
Mirrors the behavior of the from argument of the /item command
Format:
- source: an entity or block entity from which the slots will be sourced, from loot context
  - Can be block_entity, this, attacking_entity, last_damage_player, direct_attacker, target_entity, or interacting_entity
- slots: a slot range in the format of <slot_type> or <slot_type>.<slot_number> (e.g. armor.chest or container.*)

minecraft:contents Type

Selects all non-empty slots from the inventory component of one or more items
- If no item is stored inside that component, the resulting selection will be empty
The location of the item(s) whose inventory component to use is specified by another slot source
- If the slot source includes more than one item with that component, the resulting selections will be merged identically as with the minecraft:group type
- e.g. Bundle [a, b] + Shulker Box [c, d] -> [a, b, c, d]
Format:
- component: the inventory component to target
  - Allowed values are minecraft:bundle_contents, minecraft:charged_projectiles, and minecraft:container
- slot_source: a slot source containing slots with item(s) to target

minecraft:filtered Type

Applies a filter to the selected slots, excluding any non-matching slots from the resulting selection
Format:
- item_filter: an item predicate to match against the items in each slot
- slot_source: the slot source to filter

minecraft:limit_slots Type

Limits the number of slots provided, with the resulting selection containing at most that number of slots
- Any slots bringing the number of slots above that limit will be excluded, in order of inclusion
- e.g. [a, b, c, d] -> [a, b, c] if the limit is set to 3
Format:
- limit: integer, the maximum number of slots to include in the resulting selection
- slot_source: the slot source to limit

Example slot source selecting every slot with more than 16 items from the hotbar and armor slots of an entity:

{
    "type": "minecraft:filtered",
    "item_filter": {
        "count": {
            "min": 16
        }
    },
    "slot_source": [
        {
            "type": "minecraft:slot_range",
            "source": "this",
            "slots": "hotbar.*"
        },
        {
            "type": "minecraft:slot_range",
            "source": "this",
            "slots": "armor.*"
        }
    ]
}

Loot Tables

Added new minecraft:slots loot pool entry
- Provides the items contained within the selected slots to the loot table
- Format:
  - slot_source: a slot source describing where the items are located
- Supports all standard loot pool entry fields

Loot Functions

minecraft:filtered

Field modifier has been replaced with two fields:
- on_pass - function or a list of functions to run when item_filter predicate passes
- on_fail - function or a list of functions to run when item_filter predicate fails

minecraft:discard

Replaces any item stack with empty one
No fields

Predicates

Component Predicates

Component predicates (predicates field in block, item and entity predicates) now include predicates for checking the existence of every component type
Those predicates are written as {<component_type>: {}}
Such predicate check passes as long as the component is present, no matter the actual value
Existing predicates for specific components remain unchanged
Example:
- {predicates:{written_book_content:{author:"foo"}} - existing format for matching books
- {predicates:{written_book_content:{}} - special case of above that accepted any value, as long as the component existed
- {predicates:{instrument:{}} - checks if the minecraft:instrument component exists (was not allowed before)

Entity Predicates

The flags predicate now supports new values:

is_in_water: when an entity is touching water or a bubble column
is_fall_flying: when an entity is gliding with an elytra

Item Predicates

Item predicates in command form (<item>[predicate~{...},component={...}]) have been extended to accept empty predicates for any component type
Similarly to component predicates in data, those empty entries only check for component existence
The existing shorter syntax for checking component existence remains unchanged
- That means *[instrument] and *[instrument~{}] are equivalent

Enchantments

Enchantment Effect Components

minecraft:post_piercing_attack: Effects applying after a piercing attack with an item
- Only triggers if the player has at least 6 hunger points in their hunger bar

Enchantment Entity Effects

minecraft:apply_impulse: applies an impulse to the targeted entity
- direction - The first step of determining the impulse is applying this vector as local coordinates (the same used by tp @s ^ ^ ^) onto the entity look vector
- coordinate_scale - The second step is scaling the resulting vector by this vector on each axis in world space, X, Y and Z
- magnitude - The third step is scaling the resulting vector by this Level-Based Value
minecraft:apply_exhaustion: applies exhaustion to the targeted entity
- amount - Level-Based Value indicating the amount of exhaustion to apply
- Effective only on players
minecraft:play_sound: can now support a list of sound event identifiers, one for each level of enchantment
- If a level is higher than the number of sounds, the last sound in the list is used

Enchantment Level-Based Values

Added exponent

Raises the base to the specified power level.
- base - Level-Based Value indicating the base of the exponent.
- power - Level-Based Value indicating the power of the exponent.

World Generation

Dimension Types

Added new attributes field for dimensions to specify Environment Attributes
- Refer to the Environment Attribute Map section for information about the format of this field
Added a new optional timelines field that specifies which Timelines are active in this dimension
- Format: a Timeline ID, a list of Timeline IDs, or a Timeline Tag
Many fields have been migrated to Environment Attributes:
- Note: the form of these attributes may not be identical to the original fields
- ultrawarm -> minecraft:gameplay/water_evaporates, minecraft:gameplay/fast_lava, visual/default_dripstone_particle
- bed_works -> minecraft:gameplay/bed_rule
- respawn_anchor_works -> minecraft:gameplay/respawn_anchor_works
- cloud_height -> minecraft:visual/cloud_height
- piglin_safe -> minecraft:gameplay/piglins_zombify
- has_raids -> minecraft:gameplay/can_start_raid
- natural -> minecraft:gameplay/nether_portal_spawns_piglin, minecraft:gameplay/eyeblossom_open, minecraft:gameplay/creaking_active
The effects field has been removed and replaced with the following new fields:
- skybox - the skybox rendering type to use, one of:
  - none (was minecraft:nether effect ID)
  - overworld (was minecraft:overworld effect ID)
    - The following Environment Attributes are applied only when the skybox is overworld:
      - minecraft:visual/sky_color, minecraft:visual/sun_angle,minecraft:visual/sunrise_sunset_color, minecraft:visual/moon_phase, minecraft:visual/moon_angle, minecraft:visual/star_angle, minecraft:visual/star_brightness
  - end (was minecraft:end effect ID)
  - Default: overworld
- cardinal_light - the direction of cardinal lighting that affects blocks, one of:
  - default (was minecraft:overworld and minecraft:end effect ID)
  - nether (was minecraft:nether effect ID)
  - Default: default
The fixed_time field has been replaced by a has_fixed_time boolean (default: false)
- Time-based effects such as the angle of the sun are now specified instead by Environment Attributes
- However, the remainder of behaviors formerly affected by fixed_time being present will now instead use the has_fixed_time boolean

Biomes

Added new attributes field for biomes to specify Environment Attributes
- Refer to the Environment Attributes section for information about the format of this field
- Note: certain attributes, such as gameplay/fast_lava are not evaluated positionally and thus cannot be set on a Biome
Many subfields under effects have been migrated to Environment Attributes:
- Note: the form of these attributes may not be identical to the original fields
- fog_color -> minecraft:visual/fog_color
- water_fog_color -> minecraft:visual/water_fog_color
- sky_color -> minecraft:visual/sky_color
- particle -> minecraft:visual/ambient_particles
- ambient_sound, mood_sound, additions_sound -> minecraft:audio/ambient_sounds
- music -> minecraft:audio/background_music
- music_volume -> minecraft:audio/music_volume
The following color fields in the effects definition now support colors as a string in the form "#rrggbb", or a float array in the form [red, green, blue]
- water_color
- foliage_color
- dry_foliage_color
- grass_color
- grass_color_modifier

Resource Pack Versions 70.0 through 75.0

Unifont has been updated to 17.0.01
Item textures were split out of the blocks atlas into a separate new items atlas that does not have mipmaps
- All textures used in an item model have to come from the same (items or blocks) atlas
- All textures used in a block model have to come from the blocks atlas
- Textures used for still water and lava are now hardcoded to minecraft:block/water_still and minecraft:block/lava_still
To prepare for future work, the game will now print a warning if any defined sprites in any atlases share a name
The block model and state format has been expanded to allow more rotations
Textures for the Leather Horse Armor item and equipment asset have been split into a tinted base layer and an overlay layer

Textures

The texture section of *.mcmeta files has two new fields: mipmap_strategy and alpha_cutoff_bias
- mipmap_strategy has the following supported values:
  - mean averages both color and alpha between groups of four pixels for the current mipmap level to generate the next mipmap level pixel
    - This was and stays the default strategy for most solid or translucent full block textures
  - dark_cutout is similar to mean, but blends colors in a way that makes the pixels bordering cutout pixels darker
    - Simulates the blocks having a dark interior
    - This was and stays the strategy for leaves and Mangrove Roots
  - cutout is a new strategy that always generates a mipmap based on the original texture instead of the previous mipmap
    - Used for most cutout blocks that became mipmapped in this version
  - strict_cutout is a modification of cutout that uses stricter alpha cutoff value leading to the textures using this value disappearing at higher mipmap levels
    - Used for flowers and similar blocks to avoid artifacts
  - auto is the default value and will make the game to pick mean for textures that do not contain fully transparent pixels and cutout for those that do
- alpha_cutoff_bias is a float field for controlling the alpha bias for cutout textures
  - Technically there is no limit for this value, it can be negative as well, but it does not make sense to set this higher than 1.0 or lower than -1.0 since the texture will become either fully opaque or fully transparent
  - The default value for this field is 0.0, and it can be increased for textures that can become too transparent/thin at distance, or decreased if it's too "opaque"
  - It's recommended to increment or decrease this value in fine granularity for finding the sweet spot
    - As an example, 0.1 is used for kelp textures in order to prevent them being fully transparent at distance
  - Only used for lower mips of cutout textures, does not change the alpha of the first mip level, and has no effect on other textures
Glass, Glass Pane and Redstone dust now support translucent textures
Added gui/container/nautilus used for the Nautilus inventory UI

Item Sprites

Added new item sprites:
- item/camel_husk_spawn_egg
- item/copper_nautilus_armor
- item/diamond_nautilus_armor
- item/golden_nautilus_armor
- item/iron_nautilus_armor
- item/leather_horse_armor_overlay
- item/nautilus_spawn_egg
- item/netherite_horse_armor
- item/netherite_nautilus_armor
- item/parched_spawn_egg
- item/zombie_nautilus_spawn_egg
Added the following item sprites for the Spear weapon:
- When in inventory: item/wooden_spear, item/stone_spear, item/copper_spear, item/iron_spear, item/golden_spear, item/diamond_spear, item/netherite_spear
- When in hand: item/wooden_spear_in_hand, item/stone_spear_in_hand, item/copper_spear_in_hand, item/iron_spear_in_hand, item/golden_spear_in_hand, item/diamond_spear_in_hand, item/netherite_spear_in_hand

UI Sprites

Added new UI sprites:
- container/slot/nautilus_armor
- container/slot/spear - Spear icon used in the Smithing Table screen
- container/slot/nautilus_armor_inventory - Nautilus icon used in Nautilus inventory UI
Added new nine-sliced sprites:
- container/inventory/effect_background
- container/inventory/effect_background_ambient
Removed the following sprites:
- container/inventory/effect_background_large
- container/inventory/effect_background_small

Celestials Atlas

A new celestials atlas has been introduced, including sprites for objects rendered in the sky such as the Sun and Moon
Includes sprites from <namespace>:textures/environment/celestial/<path>.png
The following textures have been moved or split:
- textures/environment/sun.png -> sun
- textures/environment/end_flash.png -> end_flash
- textures/environment/moon_phases -> moon/full_moon, moon/waning_gibbous, moon/third_quarter, moon/waning_crescent, moon/new_moon, moon/waxing_crescent, moon/first_quarter, moon/waxing_gibbous

Mob Effect Sprites

Added new mob effect sprite:
- breath_of_the_nautilus

Entity Textures

Added new entity textures:
- entity/camel/camel_husk.png
- entity/equipment/camel_husk_saddle/saddle.png
- entity/equipment/horse_body/leather_overlay.png
- entity/equipment/horse_body/netherite.png
- entity/equipment/nautilus_body/copper.png
- entity/equipment/nautilus_body/diamond.png
- entity/equipment/nautilus_body/gold.png
- entity/equipment/nautilus_body/iron.png
- entity/equipment/nautilus_body/netherite.png
- entity/equipment/nautilus_saddle/saddle.png
- entity/equipment/zombie_nautilus_coral.png
- entity/nautilus/nautilus.png
- entity/nautilus/nautilus_baby.png
- entity/nautilus/zombie_nautilus.png
- entity/skeleton/parched.png
- entity/skeleton/parched_overlay.png

Sounds

Added new sounds for Spears:
- item.spear.hit
- item.spear.use
- item.spear.attack
Added special sounds for the Wooden Spear:
- item.spear_wood.hit
- item.spear_wood.use
- item.spear_wood.attack
Added new sound events for the Lunge Enchantment:
- item.spear.lunge_1
- item.spear.lunge_2
- item.spear.lunge_3
Added new sound events for the Nautilus:
- entity.baby_nautilus.ambient_land
- entity.baby_nautilus.ambient
- entity.baby_nautilus.death_land
- entity.baby_nautilus.death
- entity.baby_nautilus.eat
- entity.baby_nautilus.hurt_land
- entity.baby_nautilus.hurt
- entity.baby_nautilus.swim
- entity.nautilus.ambient_land
- entity.nautilus.ambient
- entity.nautilus.dash_land
- entity.nautilus.dash_ready_land
- entity.nautilus.dash_ready
- entity.nautilus.dash
- entity.nautilus.death_land
- entity.nautilus.death
- entity.nautilus.eat
- entity.nautilus.hurt_land
- entity.nautilus.hurt
- entity.nautilus.riding
- entity.nautilus.swim
- entity.zombie_nautilus.ambient_land
- entity.zombie_nautilus.ambient
- entity.zombie_nautilus.dash_land
- entity.zombie_nautilus.dash_ready_land
- entity.zombie_nautilus.dash_ready
- entity.zombie_nautilus.dash
- entity.zombie_nautilus.death_land
- entity.zombie_nautilus.death
- entity.zombie_nautilus.eat
- entity.zombie_nautilus.hurt_land
- entity.zombie_nautilus.hurt
- entity.zombie_nautilus.swim
- item.nautilus_armor.equip
- item.nautilus_armor.unequip
- item.nautilus_saddle_equip
- item.nautilus_saddle_underwater_equip
Added new sound events for the Zombie Horse:
- entity.zombie_horse.angry
- entity.zombie_horse.eat
Added new sound events for the Parched:
- entity.parched.ambient
- entity.parched.death
- entity.parched.hurt
- entity.parched.step
Added new sound events for the Camel Husk:
- entity.camel_husk.ambient
- entity.camel_husk.dash
- entity.camel_husk.dash_ready
- entity.camel_husk.death
- entity.camel_husk.eat
- entity.camel_husk.hurt
- entity.camel_husk.saddle
- entity.camel_husk.sit
- entity.camel_husk.stand
- entity.camel_husk.step
- entity.camel_husk.step_sand
Added new sound events for the Parrot:
- entity.parrot.imitate.camel_husk
- entity.parrot.imitate.parched
- entity.parrot.imitate.zombie_horse
- entity.parrot.imitate.zombie_nautilus

Item Models

Added new option for all item models: swap_animation_scale
- Defaults to 1.0
- Indicates how fast the item moves up and down when swapping items in the hotbar
- Large speeds can allow items that take more of the screen space to fully duck before swapped into the next item

Added new item model:

spear_in_hand - model for the Spear when in hand

Block Models

Block model elements can now be rotated around multiple axes
- The model is first rotated around X, then Y, then Z
- New fields:
  - x - rotation around the X axis in degrees, float, defaults to 0.0
  - y - rotation around the Y axis in degrees, float, defaults to 0.0
  - z - rotation around the Z axis in degrees, float, defaults to 0.0
- The existing fields axis and angle can still be used
  - If both field sets are present, the older notation takes precedence
The existing restriction for angle values limiting them to [-45, 45] has been removed
- Note: The names of faces are not influenced by rotation. Features that depend on them, like culling, will always use original directions

Block State Model Dispatch

Variants in block state dispatch files (defined in assets/.../blockstates/ can now also be rotated around the Z axis
- New optional field z has the same format as existing x and y fields: an integer with allowed values of 0 (default), 90, 180 and 270
- The rotation around the Z axis is applied after X and Y

Shaders & Post-process Effects

New shaders have been introduced to perform GPU-based sprite animations
- Added animate_sprite* core shaders, which use a new SpriteAnimationInfo uniform
Added block.vsh/fsh which copies terrain.vsh/fsh and handles ad-hoc blocks (e.g. held by entities)
Added ChunkSection uniform, used by terrain.vsh (which replaces DynamicTransforms)
The Globals uniform now has camera coordinates

Sprite Animations

Sprites (textures as part of a larger atlas) are now animated on the GPU rather than per-tick on the CPU
For regular frame-based animations, animate_sprite.vsh and animate_sprite_blit.fsh are used to perform the draw
For interpolated animations, animate_sprite.vsh and animate_sprite_interpolate.fsh are used to perform the draw
The UBO SpriteAnimationInfo contains information on where the sprite should be drawn to, within the greater texture atlas

Fixed bugs in 1.21.11

MC-2791 - The player model in the inventory screen renders in the wrong orientation when it's not standing up straight
MC-22882 - Ctrl + Q doesn't work on Mac
MC-53491 - The world border can change in size when the game is paused
MC-54988 - World border "warning" effect is not shown when graphics setting is set to "Fast"
MC-54989 - Sliders can be moved to positions between available values
MC-64087 - Revengeful zombies / Zombie reinforcements will try to attack you in creative mode
MC-73186 - Gaps between the faces of item models and complex block models
MC-80476 - On macOS, the "drop item stack" shortcut conflicts with the "quit Minecraft" shortcut
MC-114265 - Mipmaps are too dark around transparent edges in textures (e.g. side of grass)
MC-146862 - Long effect names cause text to appear outside the effect box
MC-147718 - F1, F3, F3+[char] combos cannot be rebound
MC-149630 - Some particles have very thin, vertical lines that flash in and out around the particles
MC-154651 - Boats and rafts can break off paintings and item frames
MC-159275 - Map player markers on maps of the nether don't rotate when doDaylightCycle is disabled
MC-162573 - A white outline is rendered on composters' edges when viewed from far away
MC-171688 - Invisibility status of LivingEntity is not updated when ActiveEffects are modified directly
MC-179383 - Leaves not culled with graphics set to Fast
MC-188602 - In non-natural custom dimensions, if "bed_works" is set to true, beds cannot be used to skip the night or set the spawn point
MC-189837 - Nether fog is dark after rejoining a world that is thunder storming in the Overworld
MC-195505 - Short grass is unaffected by mipmap levels
MC-199467 - Certain entity animations stop after they've existed in world for too long
MC-234358 - Moiré patterns / aliasing on certain objects when viewed from a distance
MC-237158 - Magma blocks can generate on the ceilings of caves below aquifers
MC-238715 - The "minecraft:block.chest.locked" sound cannot be heard by other players when attempting to open locked blocks
MC-241321 - Darkness vignette effect is not shown when graphics setting is set to "Fast"
MC-245854 - Fast graphics description is slightly misleading
MC-245895 - View Bobbing stops working after long elytra flight
MC-248499 - Potion UIs displayed within the inventory don't have cyan outlines if the effects are granted by beacons or conduits
MC-259368 - Z-fighting occurs on trimmed armor items
MC-263562 - World types in Realms backup info screen are untranslatable
MC-264151 - Glass blocks do not use mipmapping, but glass panes do
MC-266425 - Recipes for new waxed copper blocks are not grouped
MC-267364 - Teleporting in the air is considered flying by server
MC-269295 - Jump bar progress renders unused pixels from dynamic texture atlas
MC-271729 - Armadillo scute drops are not affected by the mob_drops game rule
MC-271938 - Mace smash attack can push players in creative mode that are flying
MC-271941 - Music discs can sometimes spawn inside jukeboxes when ejected from them
MC-274828 - Horse armor item and entity model tint affects the entirety of the textures
MC-276382 - Leather horse armor leggings & helmet parts are untextured
MC-276445 - Highlighted text within the anvil and creative inventory interfaces renders blue making it difficult to read
MC-277768 - Mipmapping no longer affects items
MC-278742 - Creakings cannot be ridden by any entities using commands
MC-279076 - Certain mobs will always retarget the player upon reloading the chunks, regardless of distance or gamemode
MC-295949 - Flying through vines with an elytra cancels the flight
MC-296952 - F4 key to toggle shaders cannot be rebound
MC-297328 - Unloading and reloading an area causes invisible entities to be visible until you get close enough.
MC-297367 - Checkbox filled status isn't narrated
MC-298405 - Text components in the "label" of input controls in dialogs don't support "hover_event"
MC-298767 - Piercing arrows phase through mobs that are in the same block
MC-298915 - Multishot crossbows loaded in survival or adventure mode show their secondary charged projectiles on a separate line in the tooltip
MC-298942 - Character body moves instead of the head when riding a happy ghast
MC-299136 - Hyper Potions (Ian Tsuchiura) is not mentioned in the credits and splash texts
MC-299196 - Waypoints fade out when an advancement is granted
MC-299876 - Labels for booleans within dialogs are rendered in a slightly different shade of white than normal
MC-300588 - Waypoint modifications reset upon death
MC-300642 - When texture atlases are large, gaps are rendered between blocks that have a low resolution
MC-300979 - The movement and duration messages in the demo introduction screen now have a text shadow
MC-301127 - Music stops and restarts when trying to connect to a server when the music frequency is set to constant
MC-301271 - Object text components do not render in some places unless there are text glyphs on the same line
MC-301311 - The “Transfer Now” button no longer renders highlighted when the java realms information box is selected
MC-301424 - entity_data item component detection is broken in resource packs
MC-301516 - The mouse cursor doesn’t change to the hand shape when hovering over tabs in the “Create New World” menu and similar screens
MC-301517 - The mouse cursor doesn’t change to the hand shape when hovering over arrows in the singleplayer, multiplayer, resource packs, and data packs menus
MC-301518 - The mouse cursor doesn’t change to the hand shape when hovering over checkboxes
MC-301520 - The mouse cursor doesn’t change to the hand shape when hovering over the difficulty lock button
MC-301527 - The mouse cursor doesn’t change to the resize shape when scrolling in the advancements menu
MC-301557 - The shading direction of the bolts on single and large copper chests does not match
MC-301595 - Music toasts briefly appear in the pause menu after a song has finished
MC-301632 - Comparators measuring jukeboxes do not update when a music disc is taken out of a jukebox if the music disc has already finished its song
MC-301754 - The hand animation plays when right-clicking shelves with nothing in your hand
MC-301756 - The “This is a Snapshot Realm…” box outline is rendered above the delete realm interface
MC-301763 - The outline of the “Invited” element within the realms “Players” tab renders above other tabs when selected and when a scroll bar is present
MC-301805 - Selected item outline on statistics screen renders outside of scissor area
MC-301879 - Double weathered and waxed weathered copper chests' bottom texture looks off compared to the other variants
MC-301988 - Buttons in the telemetry screen are not aligned properly in some languages
MC-302030 - Setting commandBlocksEnabled to false prevents command blocks from being edited
MC-302071 - Single and double copper chests have inconsistent side textures
MC-302111 - Elements within the resource pack and data pack menus are not selected in order when using the TAB key
MC-302184 - Copper golems in cave/void air never turn into statues
MC-302209 - Debug renderers stop working when changing dimensions
MC-302246 - Sprite object component does not render in server list depending on component tree
MC-302254 - Cursor changes do not work for command suggestions
MC-302288 - All shelves have the oak tan map color
MC-302325 - When the player toggles a debug renderer using its hotkey (F3+B, F3+G) while in the debug options screen, the corresponding entry is not updated
MC-302338 - The narrator button in the Accessibility Settings menu doesn't update upon pressing Ctrl+B
MC-302362 - Clicking on "Singleplayer" or "Multiplayer" in the main menu then immediately clicking on a world or server joins it even when not clicking the play button
MC-302409 - Lightning that strikes waxed lightning rods do not deoxidize nearby unwaxed copper blocks
MC-302469 - Creepers at the player's exact position with an explosion radius of 0 set the player's velocity to NaN
MC-302477 - Loot tables stopped supporting SNBT as entity data
MC-302482 - Resource and data pack names can overlap selection boxes when the scroll bar is present
MC-302493 - The mouse cursor doesn't change to the hand shape when hovering over the close button in the "Add Realm" screen
MC-302516 - Zombie villagers spawn as the variant matching the biome at 0, 0, 0
MC-302549 - Server main thread deadlock during respawn position resolution when the entire world spawn radius is filled with fluids
MC-302601 - A white outline is rendered on anvils' top texture when viewed from far away

Get the Release

To install the Release, open up the Minecraft Launcher and click play! Make sure your Launcher is set to the "Latest Release” option.

Cross-platform server jar:

Minecraft server jar

As we are preparing to remove obfuscation from Java Edition, you can also get a non-obfuscated experimental version of this snapshot using the Minecraft Launcher:

Download this zip file
Unpack the folder into your "versions" folder of your local Minecraft application data folder
Start (or restart) the Launcher
Create a new launch installation and select the "unobfuscated 1.21.11_unobfuscated" version
Start the game and the remaining files will be downloaded

An unobfuscated server jar can be found here:

Unobfuscated server jar

Report bugs here:

Minecraft issue tracker!

Want to give feedback?

For any feedback and suggestions, head over to the Feedback site. If you're feeling chatty, join us over at the official Minecraft Discord.

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Minecraft: Java Edition 1.21.11 - Mounts of Mayhem

New Features

Nautilus

Zombie Nautilus

Coral Zombie Nautilus

Nautilus Armor

Status Effects

Parched

Camel Husk

Spear Weapon

Jab Attack

Charge Attack

Lunge Enchantment

Advancements

Texture Filtering

Changes

Zombie Horse

Mob Spawning

Advancements

Items

Sounds

Accessibility

Input

Changes to Visuals

Graphics Presets

Debug Renderer Changes

UI

Technical Changes

Minecraft Server Management Protocol Version 2.0.0

Data Pack Versions 89.0 through 94.1

Zombie Nautilus Variants

Commands

Added stopwatch

Changes to execute

Changes to worldborder

Game Rules

Limits

Added minecraft:fire_spread_radius_around_player

Game Tests

Timelines

Environment Attributes

Sources

Modifiers

Interpolation

Biomes

Timelines

Environment Attribute Map

Attribute Track

Easing Types

Common Data Types

RGB Color

ARGB Color

Particle Options

Mob Activity

Common Modifiers

Modifiers on Boolean Values

Modifiers on Float Values

Modifiers on RGB Color Values

Modifiers on ARGB Color Values

New Environment Attributes

minecraft:visual/fog_color

minecraft:visual/fog_start_distance

minecraft:visual/fog_end_distance

minecraft:visual/sky_fog_end_distance

minecraft:visual/cloud_fog_end_distance

minecraft:visual/water_fog_color

minecraft:visual/water_fog_start_distance

minecraft:visual/water_fog_end_distance

minecraft:visual/sky_color

minecraft:visual/cloud_color

minecraft:visual/cloud_height

minecraft:visual/default_dripstone_particle

minecraft:visual/ambient_particles

minecraft:visual/sunrise_sunset_color

minecraft:visual/sun_angle

minecraft:visual/moon_angle

minecraft:visual/star_angle

minecraft:visual/moon_phase

minecraft:visual/star_brightness