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.

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8votes
New Pandora Biomes
8votes
All Biomes Are Updated To The Same Level Of Sophistication
8votes
the void dimension
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The Dream Dimension Part 1
8votes
Carsic caves
8votes
Polar Chasm (Arctic Biome of the Nether)
8votes
8votes
Forest Remnants
8votes
Allosaurus Valley
8votes
random biome
8votes
The Enchanted Waters in caves
8votes
The Sunken Isle
8votes
Spectral Forest
8votes
Sky and Moon [Bedrock Edition]
8votes
The Nether's Past
8votes
Trimmed Cactus (desert/badlands update?)
8votes
caves update
8votes
Piglin Ruler
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The far lands
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(Swamp) Bald Cypress Trees
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Infinity Portals to reach custom dimensions
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Glowworm cave
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Spider cave
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Shattered Jungle
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Lush Savanna
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Drycen
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(Dimension) The Blooming Wasteland
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Venom Dimension
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New Biome: Thorn Forest
8votes
little big biome