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Minecraft 21w15a

Weekly work-in-progress build. Things break and get removed again. Full source data for this version is extracted and browsable below.

2,109 names shipped in this version. Each result opens the wiki page for that thing.

Contents (12)
  1. What changed in 21w15a
  2. Blocks
  3. Items
  4. Mobs and entities
  5. How to make the new things
  6. Sound events
  7. New in-game text
  8. Reworded text
  9. Fixes
  10. Development cycle
  11. Browse this version
  12. Neighbouring versions

Java What changed in 21w15a

Everything below is measured by comparing the game files of 21w14a with 21w15a — not copied from patch notes.

+3Blocks
+3Items
+1Mobs and entities
+8Sound events
21w15a block and item additions

3 new blocks and items. Hover a slot for the name; click to open its page.

Blocks +3

Items +3

Mobs and entities +1

How to make the new things 3

Hover a slot to see what goes in it.

ResultMade inRecipe
Raw Copper BlockCrafting
Raw Gold BlockCrafting
Raw Iron BlockCrafting

Sound events +8 · −1

Removed: minecraft:entity.goat.screaming.ram

New in-game text 22

KeyText
block.minecraft.raw_copper_blockBlock of Raw Copper
block.minecraft.raw_gold_blockBlock of Raw Gold
block.minecraft.raw_iron_blockBlock of Raw Iron
commands.debug.function.noRecursionCan't trace from inside of function
commands.debug.function.success.multipleTraced %s commands from %s functions to output file %s
commands.debug.function.success.singleTraced %s commands from function '%s' to output file %s
commands.debug.function.traceFailedFailed to trace function
entity.minecraft.markerMarker
multiplayer.texturePrompt.failure.line1Server resource pack couldn't be applied
multiplayer.texturePrompt.failure.line2Any functionality that requires custom resources might not work as expected
multiplayer.texturePrompt.serverPrompt%s Message from server: %s
subtitles.entity.goat.ambientGoat bleats
subtitles.entity.goat.deathGoat dies
subtitles.entity.goat.eatGoat eats
subtitles.entity.goat.hurtGoat hurts
subtitles.entity.goat.long_jumpGoat leaps
subtitles.entity.goat.milkGoat gets milked
subtitles.entity.goat.prepare_ramGoat stomps
subtitles.entity.goat.ram_impactGoat rams
subtitles.entity.goat.screaming.ambientGoat bellows
subtitles.entity.goat.stepGoat steps
subtitles.item.bone_meal.useBone Meal crinkles

Reworded text 2

Wording Mojang changed in this version.

KeyBeforeAfter
multiplayer.requiredTexturePrompt.line2Rejecting a custom resource pack will disconnect you from this server.Rejecting this custom resource pack will disconnect you from this server.
selectWorld.pre_worldheightLoading of old worlds is temporarily disabled.Loading of worlds with extended height is disabled.

Fixes 18

Read from Mojang’s own release notes for Minecraft Snapshot 21w15a, published 2021-04-14. Every entry keeps its original bug ID.

18 issues fixed, read from Mojang’s own patch notes. Each entry keeps its original bug ID.

Bugs fixed in 21w15a 18

  • MC-203855 A geode configured_feature causes a crash when use_alternate_layer0_chance is used with no entries in inner_placements
  • MC-212145 Summoning Glow Lichen using /setblock doesn't place any lichen but creates light until the block is updated
  • MC-212273 Glow Lichen doesn't render when being held by an Enderman
  • MC-215836 Deepslate uses the same color as stone on maps
  • MC-215844 Stone still generates around lava pools at low levels
  • MC-216588 Feature placement - java.lang.IllegalArgumentException: bound must be positive
  • MC-218588 Cracked deepslate bricks & tiles are in the incorrect position in the creative inventory
  • MC-218698 Infested deepslate makes the old "stone" sounds
  • MC-218705 Deepslate emerald ore is separated from other deepslate ores in the creative inventory
  • MC-218749 Deepslate coal ore doesn't drop experience
  • MC-218944 Copper ore and deepslate copper ore have inconsistent textures
  • MC-219972 Deepslate gold ore has an inconsistent pixel
  • MC-221501 Water splash potions don't give the axolotl 1.5 minutes of moisture
  • MC-221718 Lava fog repeatedly fails to render each block at certain y-levels
  • MC-221798 Blindness doesn't render correctly
  • MC-222104 Beacon beam fog is incorrectly computed
  • MC-222266 Goats don't attack
  • MC-222522 Nether Gold Ore is no longer smeltable

Development cycle

This build was part of the run-up to 1.17. Everything tested here landed in that release.

Browse this version