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

24votes
Demon dimension
23votes
(New Dimension) The Beginning - Water Dimension (Or another name)
23votes
Crying Valley Biome
23votes
Lava Beach Nether Biome
23votes
Land of the Lost (Nether Biome)
23votes
Diverse ores
23votes
Dark Jungle biomes
23votes
Update Magma needs info
23votes
Colour Dimension
23votes
CORE dimension
22votes
Idea to make birch forests more unique/interesting
22votes
(Nether Update) A violet nether forest biome
22votes
Nether Peaks [New Biome]
22votes
Purple nether wart forest
22votes
Lake Biome
22votes
Highland Biomes ( Highland Cow, Pine Wood, Pine Martin )
22votes
The Fair Forest
22votes
The Below-World Update (Part 2): Home Fiery Home
22votes
Mythology dimension
22votes
Bioma de Néon e Seus Habitantes
21votes
Cherry blossom forest
21votes
Green dimension
21votes
(Nether Biome, New mob, new potion) The Crying Sea
21votes
Making every biome relevant! (Specialize plants)
21votes
Biome: Roofed Ocean
21votes
Dragon Biome
21votes
End Deserts
21votes
Complete nether overhaul (links enclosed)
21votes
Ice Age Dimension
21votes
Disorientation dimension (edited)