Contents (10)
Java What changed in 18w20a
Everything below is measured by comparing the game files of 18w19b with 18w20a — not copied from patch notes.
6 new blocks and items. Hover a slot for the name; click to open its page.
Mojang’s data generator did not produce the full registry report for one of these two builds, so this comparison covers blocks and items only. The other 0 registries could not be measured this far back — an empty section below means “not measurable”, not “nothing changed”.
Blocks +3 · −3
Removed: minecraft:kelp_top, minecraft:prismarine_bricks_slab, minecraft:prismarine_bricks_stairs
Items +5 · −5
Removed: minecraft:cod_mob_spawn_egg, minecraft:kelp_top, minecraft:prismarine_bricks_slab, minecraft:prismarine_bricks_stairs, minecraft:salmon_mob_spawn_egg
How to make the new things 2
Hover a slot to see what goes in it.
| Result | Made in | Recipe |
|---|---|---|
Prismarine Brick Slab | Crafting | ![]() ![]() ![]() 6 |
Prismarine Brick Stairs | Crafting | ![]() ![]() ![]() ![]() ![]() ![]() 4 |
Block states changed
| Block | Added | Removed |
|---|---|---|
| Kelp | age = 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | — |
New in-game text 13
| Key | Text |
|---|---|
block.minecraft.kelp_plant | Kelp Plant |
block.minecraft.prismarine_brick_slab | Prismarine Brick Slab |
block.minecraft.prismarine_brick_stairs | Prismarine Brick Stairs |
commands.team.option.prefix.success | Team prefix set to %s |
commands.team.option.suffix.success | Team suffix set to %s |
entity.minecraft.cod_mob | Cod |
entity.minecraft.salmon_mob | Salmon |
entity.minecraft.tropical_fish | Tropical Fish |
item.minecraft.cod_spawn_egg | Cod Spawn Egg |
item.minecraft.debug_stick.empty | %s has no properties |
item.minecraft.debug_stick.select | selected "%s" (%s) |
item.minecraft.debug_stick.update | "%s" to %s |
item.minecraft.salmon_spawn_egg | Salmon Spawn Egg |
Reworded text 60
Wording Mojang changed in this version.
| Key | Before | After |
|---|---|---|
block.minecraft.heavy_weighted_pressure_plate | Weighted Pressure Plate (Heavy) | Heavy Weighted Pressure Plate |
block.minecraft.kelp | Kelp Base | Kelp |
block.minecraft.light_weighted_pressure_plate | Weighted Pressure Plate (Light) | Light Weighted Pressure Plate |
entity.minecraft.lightning_bolt | Bolt of Lightning | Lightning Bolt |
item.minecraft.bat_spawn_egg | Spawn Bat | Bat Spawn Egg |
item.minecraft.blaze_spawn_egg | Spawn Blaze | Blaze Spawn Egg |
item.minecraft.cave_spider_spawn_egg | Spawn Cave Spider | Cave Spider Spawn Egg |
item.minecraft.chainmail_boots | Chain Boots | Chainmail Boots |
item.minecraft.chainmail_chestplate | Chain Chestplate | Chainmail Chestplate |
item.minecraft.chainmail_helmet | Chain Helmet | Chainmail Helmet |
item.minecraft.chainmail_leggings | Chain Leggings | Chainmail Leggings |
item.minecraft.chicken_spawn_egg | Spawn Chicken | Chicken Spawn Egg |
item.minecraft.cow_spawn_egg | Spawn Cow | Cow Spawn Egg |
item.minecraft.creeper_spawn_egg | Spawn Creeper | Creeper Spawn Egg |
item.minecraft.dolphin_spawn_egg | Spawn Dolphin | Dolphin Spawn Egg |
item.minecraft.donkey_spawn_egg | Spawn Donkey | Donkey Spawn Egg |
item.minecraft.drowned_spawn_egg | Spawn Drowned | Drowned Spawn Egg |
item.minecraft.elder_guardian_spawn_egg | Spawn Elder Guardian | Elder Guardian Spawn Egg |
item.minecraft.enderman_spawn_egg | Spawn Enderman | Enderman Spawn Egg |
item.minecraft.endermite_spawn_egg | Spawn Endermite | Endermite Spawn Egg |
item.minecraft.evocation_illager_spawn_egg | Spawn Evoker | Evoker Spawn Egg |
item.minecraft.ghast_spawn_egg | Spawn Ghast | Ghast Spawn Egg |
item.minecraft.golden_horse_armor | Gold Horse Armor | Golden Horse Armor |
item.minecraft.guardian_spawn_egg | Spawn Guardian | Guardian Spawn Egg |
item.minecraft.horse_spawn_egg | Spawn Horse | Horse Spawn Egg |
item.minecraft.husk_spawn_egg | Spawn Husk | Husk Spawn Egg |
item.minecraft.llama_spawn_egg | Spawn Llama | Llama Spawn Egg |
item.minecraft.magma_cube_spawn_egg | Spawn Magma Cube | Magma Cube Spawn Egg |
item.minecraft.milk_bucket | Milk | Milk Bucket |
item.minecraft.mooshroom_spawn_egg | Spawn Mooshroom | Mooshroom Spawn Egg |
item.minecraft.mule_spawn_egg | Spawn Mule | Mule Spawn Egg |
item.minecraft.ocelot_spawn_egg | Spawn Ocelot | Ocelot Spawn Egg |
item.minecraft.parrot_spawn_egg | Spawn Parrot | Parrot Spawn Egg |
item.minecraft.phantom_spawn_egg | Spawn Phantom | Phantom Spawn Egg |
item.minecraft.pig_spawn_egg | Spawn Pig | Pig Spawn Egg |
item.minecraft.polar_bear_spawn_egg | Spawn Polar Bear | Polar Bear Spawn Egg |
item.minecraft.pufferfish_spawn_egg | Spawn Pufferfish | Pufferfish Spawn Egg |
item.minecraft.rabbit_spawn_egg | Spawn Rabbit | Rabbit Spawn Egg |
item.minecraft.sheep_spawn_egg | Spawn Sheep | Sheep Spawn Egg |
item.minecraft.shulker_spawn_egg | Spawn Shulker | Shulker Spawn Egg |
item.minecraft.silverfish_spawn_egg | Spawn Silverfish | Silverfish Spawn Egg |
item.minecraft.skeleton_horse_spawn_egg | Spawn Skeleton Horse | Skeleton Horse Spawn Egg |
item.minecraft.skeleton_spawn_egg | Spawn Skeleton | Skeleton Spawn Egg |
item.minecraft.slime_spawn_egg | Spawn Slime | Slime Spawn Egg |
item.minecraft.spider_spawn_egg | Spawn Spider | Spider Spawn Egg |
item.minecraft.squid_spawn_egg | Spawn Squid | Squid Spawn Egg |
item.minecraft.stray_spawn_egg | Spawn Stray | Stray Spawn Egg |
item.minecraft.tropical_fish_spawn_egg | Spawn Tropical Fish | Tropical Fish Spawn Egg |
item.minecraft.turtle_spawn_egg | Spawn Turtle | Turtle Spawn Egg |
item.minecraft.vex_spawn_egg | Spawn Vex | Vex Spawn Egg |
item.minecraft.villager_spawn_egg | Spawn Villager | Villager Spawn Egg |
item.minecraft.vindication_illager_spawn_egg | Spawn Vindicator | Vindicator Spawn Egg |
item.minecraft.wheat_seeds | Seeds | Wheat Seeds |
item.minecraft.witch_spawn_egg | Spawn Witch | Witch Spawn Egg |
item.minecraft.wither_skeleton_spawn_egg | Spawn Wither Skeleton | Wither Skeleton Spawn Egg |
item.minecraft.wolf_spawn_egg | Spawn Wolf | Wolf Spawn Egg |
item.minecraft.zombie_horse_spawn_egg | Spawn Zombie Horse | Zombie Horse Spawn Egg |
item.minecraft.zombie_pigman_spawn_egg | Spawn Zombie Pigman | Zombie Pigman Spawn Egg |
item.minecraft.zombie_spawn_egg | Spawn Zombie | Zombie Spawn Egg |
item.minecraft.zombie_villager_spawn_egg | Spawn Zombie Villager | Zombie Villager Spawn Egg |
Development cycle
This build was part of the run-up to 1.13. Everything tested here landed in that release.





