Please read the pinned post on creating biomes and dimensions. Please put items for the new Mountains and Nether Updates in their proper categories. Remember portals are structures, that includes Nether portals.

Vote for an existing idea or New post

22votes
Ether Dimension
22votes
Birch Forest Biome Overhaul
22votes
Underworld Dimension? needs info
22votes
(Biome) bioluminescent underground mushroom isle/swamplands
22votes
Update Magma needs info
22votes
Meteor Crater (Biome) (was: A new biome idea)
22votes
Colour Dimension
22votes
CORE dimension
22votes
Throwback biomes/Dimensions
22votes
April Fool's Dimension
22votes
Wither dimension
21votes
Forgotten biome
21votes
Infected Biome and Irradium
21votes
Olympus/Heaven dimension
21votes
Mythology dimension
21votes
Wastland biome needs info
21votes
Disorientation dimension (edited)
20votes
Magma Spikes Biome (For the Nether Update!)
20votes
The mystic islands dimension
20votes
Better, Tiered Caves
20votes
Complete nether overhaul (links enclosed)
20votes
More Storms!: Part 3 Hail
20votes
Have biome transition appear smoother and more “realistic”.
20votes
The Below-World Update (Part 2): Home Fiery Home
20votes
"The Mechanical Dimension"
20votes
Krack Biome (was: New Biome!)
20votes
The Mining diemension
19votes
Basalt hills biome for nether update
19votes
Rename the “Soul Sand Valley” to the “Shrieking Valley”
19votes
Biome: Roofed Ocean