They just added New Dimensions to Minecraft (1.16 Snapshot Update 20w21a)
Here's a look at the NEW custom dimensions added to Minecraft 1.16. You can now add your own custom worlds and dimensions! This is awesome!PLAY Block Ness Mo
NEW Infinite Dimensions! APRIL FOOLS Update Minecraft 1.16
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Java Edition 1.19 – Minecraft Wiki
Java Edition 21w20a – Minecraft Wiki
Minecraft 1.16 Update
Java Edition 1.20.3 – Minecraft Wiki
Java Edition 1.16 – Minecraft Wiki
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Java Edition 22w13oneBlockAtATime – Minecraft Wiki
Custom – Minecraft Wiki
Minecraft 1.16 Snapshot 20w06a Nether Biomes, Netherite (Stronger
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Custom Worlds + Dimensions, Redstone Change, + more!
Java Edition 20w14∞ – Minecraft Wiki