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

Vote for an existing idea or New post

3votes
Ice Crystal Dimension
1vote
chequred beacon universe
8votes
Wither Storm dimension
8votes
Slime Catacombs
1vote
Nether Topside
8votes
Missing biomes: Eroded mountain biome
5votes
Regular forest biome detalization.
1vote
Stone biome
2votes
End forests
2votes
broken dimension
7votes
Toxic Caverns Introduces the Toxic Geyser Block!
11votes
Madagascan Spiny Forest biome
14votes
Scrubland biome
18votes
New Dimensions, Elder Stone, Elder Golem! New Boss Fight!
16votes
'Shattered' mountains variant for every biome in the game
5votes
Mystic dimension
17votes
Underground Forests
1vote
The reversed dimension
10votes
Biome locator: Using Biome Pictures
8votes
Miners Dream
4votes
The Parallel Dimension
3votes
Diamond Dimension
7votes
(Nether biome) dead root island
4votes
Make Hardcore Harder (Part 2, World Generation)
9votes
Haunted Hills Biome
4votes
Elemental dimension
1vote
Recolour the Nether
2votes
Enchanted Orb/Pocket Dimensions
8votes
Core of the Earth
10votes
The Smog Heaps—A new Nether biome w/ mobs, blocks (Concept art included)