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

6votes
Underground Water Oceans in the Nether!
24votes
Yellow Netherwart Forest
8votes
(Nether biome) Shadow Hills
11votes
Crying Obsidian Dimension
78votes
Flooded Forest: Something That The Overworld Needs
10votes
nether bamboo forest
51votes
Deep Nether (Dark Nether)
26votes
The Bone Quarry (and other Soul Sand Valley variants)
13votes
Pear tree forests
16votes
End Biome: Purpur Stone Biome
13votes
Scorched Savanna
1vote
Portal hecho con la obsidiana llorona
7votes
Infinite End
5votes
Stone forest biome
4votes
Bioma Morto
15votes
Timeless Forest
5votes
biomass
4votes
World and Over, A new dimension.
18votes
Warped forests have a LOT of potential to be great (X-Post from reddit)
16votes
Withered Depths: A brand new Nether Biome
5votes
Sand Dimension
8votes
Simply unflatten the nether ceiling and provide late-game access
629votes
Deep Nether
12votes
Quartz Crystal Fields (New Nether Biome)
13votes
Creeper "Homelands"
35votes
(nether biome) fungus cliff side
22votes
Crying Valley Biome
6votes
Granite Forest (Spires)
1vote
Mini Nether and Overworld biomes in the End
16votes
Glowslime