Please read the pinned post on creating biomes and dimensions. This is not a category designed for entire huge updates, this is a biomes and dimensions category. Remember that individual items, mobs, and structures should still go in their own categories.

Vote for an existing idea or New post

7votes
Wither Storm dimension
5votes
Toxic Caverns Introduces the Toxic Geyser Block!
8votes
Madagascan Spiny Forest biome
8votes
Core of the Earth
14votes
Biome Variation (beach): MARSHLANDS
3votes
3rd Chain of Islands Past End Cities
17votes
Magic Mountains
3votes
Code dimension
40votes
Adding Life to the Underwater Caves
10votes
Mushroom Island Needs a Total Revamp
13votes
End weather
14votes
A More Realistic Desert
6votes
Void dimension
12votes
Make a biome that rains all the time
21votes
Mythology dimension
36votes
Tide pools on seaside Beaches
27votes
(Part1/3) Hot Springs Biome, Geysers, New Ore, A New Mob (The Vapor), and More
15votes
The Mythos Dimension – Underground World Generation
17votes
Abandoned War Site/Junk Biome
23votes
Meteor Crater (Biome) (was: A new biome idea)
22votes
Colour Dimension
22votes
CORE dimension
33votes
Darkforest
14votes
Random parkour biome
36votes
The crystal dimension
48votes
Bedrock Dimension (was: New Dimensions)
7votes
(Nether Update): The Blazing Hollows Biome
2votes
The Magma Messa (New Nether Biome!!!)