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

35votes
Waterfalls and Water Patches in the End.
36votes
67votes
City biome (abandoned)
20votes
Demon dimension
38votes
Adding the solar planets and portals to them
29votes
Parasitic Warped Forest
72votes
Basalt Layer in Nether
31votes
The Jungle Update: Jungle Terrain improvements
25votes
Dried Up Ocean
34votes
New dimension: moon
14votes
Biome: Sanctuary
26votes
Phantom sky ruins with mother phantom boss
21votes
Biome: Roofed Ocean
11votes
Arctic Biome
8votes
Biome locator: Using Biome Pictures
28votes
Olympus/Heaven dimension
21votes
Oceanside Cliffs
24votes
Withered Biome(s)
11votes
Bubble Column Dimension
5votes
Nothing Dimension
14votes
Dead Sea biome
17votes
Raining Mushroom Stew in Mushroom Island Biome
36votes
Extreme Falls Biome | Waterfalls
55votes
The Underworld
60votes
Horror forest
136votes
The Spirit World
23votes
The Mining diemension
46votes
Linking the dimensions in one big dimension
14votes
(Nether Update) A violet nether forest biome
6votes
Quartzited Forest