Minecraft Snapshot 21w40a

Badabee badablurb.

We still highly recommend backing up your world before loading it in this snapshot.

Changes in 21w40a

• World generation tweaks
• Changes to mob spawning
• Copper Ore now drops 2-5 (from 2-3) Raw Copper items
• In the Stonecutter, a Block of Copper can be converted to four Cut Copper
• A bunch of biome variant with similar features but different shapes have been merged into one, since the shape is controlled independently now
• Renamed some biomes

World Generation

• Updated ore distribution to make branch mining deep down more rewarding. Updated ore distribution chart
  • For example, added more unexposed diamonds
  • Iron ore now generates above 80, with more iron ore as you go higher
  • Extra gold generates below height -48
• Non-cave biomes no longer change with height - so no more savannas in the sky and things like that
• Tweaked the relative size of some biomes to match 1.17 a bit closer.
• Increased the average size of most biomes (this also means biomes aren't in the same places as before)
• Fixed some aquifer issues (a side effect of this is that aquifers are in different places now compared to last snapshot)
• Slightly increased the frequency of underwater magma
• Increased the amount of dungeons, especially below height 0
• Gravel now generates below height 0
• Villages are slightly more spread out
• Removed water lake features, Aquifers provide local water levels

Mob Spawns

• Axolotls now only spawn in water, above clay blocks, in lush caves
• Glowsquids now only spawn in water blocks, under height 30
• Cod, Salmon, Pufferfish, Tropical Fish, Squid and Dolphins now only spawn in water from height 50 to height 64
• Tropical Fish now also spawn in lush caves at any height
• Zombies once again spawn in dripstone caves - drowned can also spawn there however
• Goats no longer spawn in stony peaks

Technical Changes in 21w40a

• Optimized AI for Axolotls, Goats, Hoglins, Zoglins, Piglins, Piglin Brutes and Villagers
• Bedrock layers generate dependent on the world seed now

Fixed bugs in 21w40a

• MC-132306 Snowy grass without snow near lakes in snowy biome
• MC-169523 As of 18w06a, the sand, clay and gravel blocks no longer generate around small lakes
• MC-197688 Mountain Edge never generates
• MC-217906 Large amounts of axolotls cause performance issues
• MC-225842 Flowers can generate on large plants near lakes
• MC-225858 Seeds and flowers appear in ponds
• MC-227064 Floating grass can still generate above water lakes
• MC-229365 Large amounts of goats causes performance issues
• MC-236617 Mountains & Gravelly Mountains use their 1.17.1 biome ID name
• MC-236632 Banners without patterns do not render properly
• MC-236663 Command blocks do not display command in their UI
• MC-236736 No relief on treasure map or explorer maps
• MC-236896 Strange mini broken aquifer walls generating commonly on the surface
• MC-237490 The bottom parts of aquifers aren't always surrounded by blocks which can occasionally cause them to spill into caves in ways that appear bizarre
• MC-237666 Unused biomes still present in game files
• MC-237925 Opening world from 1.12.2 (or older) in latest snapshot regenerates random chunks
• MC-237933 Sweet Berries generate much too often
• MC-237950 Cave vines can generate without tip because prioritize_tip option is negated
• MC-237951 Cave vines can generate into water
• MC-237962 Entities bob their head up and down when targeting towards the player
• MC-238104 Blue Orchid generation has decreased
• MC-238265 version.json contains internal revision ID instead of game version ID