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.

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639votes
Ready to talk biomes and dimensions? Here's how to do it! (Start Here) Pinned
1496votes
(May/June 2018) Featured Topic: Underground!
534votes
Natural Disasters
556votes
Dimension: The Abyss
285votes
(July 2018) Featured Topic: The Swamp
287votes
Dinosaur Dimension
202votes
City Biomes
187votes
Swamp Overhaul! (Pictures and Textures Included)
135votes
Put the far lands back in the game.
424votes
Waterfall Biomes
56votes
Deeper Underground
49votes
Sand Layer Desert Biome
175votes
Updating the Nether (new biomes, new mobs, new plants, treasures)
67votes
Candy dimension (was: New dimension)
160votes
Burnwood Trees That Could Generate in the Nether
139votes
Roofed Forest Overhaul!
25votes
We don't need more dimensons
157votes
Realistic Biome generation
26votes
The Map Makers Dimension
216votes
luminescent forest
247votes
(Biome) Dead Forests
52votes
More Frequent Jungles
164votes
Frostland Dimension (was: New Dimension: Frostland)
24votes
Milk dimension
179votes
Better Snowfall
14votes
Make the new Nether Trees grow from the Ceiling as well.
34votes
A biome called the Arachnid Forrest, a place filled with spiders.
30votes
The Mythos Dimension – Hub Post (Read First)
67votes
Atlantis