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

33votes
Dried Up Ocean
33votes
Decayed depths (nether biome)
33votes
Dead Volcano biomes
33votes
Phantom sky ruins with mother phantom boss
33votes
Valley Biome that generates in the middle of Extreme hills / Mountains
33votes
There should be "ore chunks" where certain ores generate more
33votes
Withered Biome(s)
33votes
Impact Biome
33votes
Potion Fountains or Waterfalls
32votes
Ash Geyser Biome
32votes
Parasitic Warped Forest
32votes
Magma Spikes Biome (For the Nether Update!)
32votes
Obsidian Spikes biome for the Nether.
32votes
Islands change depending on the Ocean Biome/Temperature
32votes
Birch Forest Biome Overhaul
32votes
(Biome) bioluminescent underground mushroom isle/swamplands
32votes
Wither dimension
31votes
Hot water.
31votes
New dimension. Thule.
31votes
Infected Biome and Irradium
31votes
River Deltas
31votes
We don't need more dimensons
30votes
Volcano
30votes
(Nether Biome) Wither Forest
30votes
Horizontal Nether Portals
30votes
Vertical Cubic Expansion
30votes
Shattered Savanna Biome Parity
30votes
Ice Caves
30votes
"The Mechanical Dimension"
29votes
Fantasy Dimension for the Future: Ascendance