Java Edition 18w09a

18w09a^[1] is the twenty-third snapshot released for Java Edition 1.13, which added coral blocks and underwater ruins.

Additions

Blocks

Coral Block

• Comes in 5 colors: blue, pink, purple, red, yellow
• Turns into dead coral when placed out of the water.
  • Dead coral cannot be revived.
• Only obtainable in the creative inventory.

World generation

Ocean ruins

• Come in many different shapes and sizes.
• Cold ruins can be found in cold and frozen ocean biomes regardless of depth.
• Warm ruins can be found in warm, lukewarm, and deep lukewarm ocean biomes.
• Can generate alone or as part of a big ruined village.
  • Can also generate out of the water, slightly underground or slightly above sea level.

Changes

Mobs

Phantoms

• No longer spawn in the End.
• Will now despawn during daytime.

Command format

Tags

• Added the vanilla block and item tag minecraft:coral.
• The minecraft:water_hacked tag now includes chests.

General

Optimizations

• Optimized particle rendering slightly

Fixes

6 issues fixed

From released versions before 1.13

• MC-118324 – One of magenta dye recipes is unlocked via getting Ink Sac
• MC-118416 – Recipe for bowl not unlocked until bowl or mushrooms are obtained

From the 1.13 development versions

• MC-125141 – Witch huts generated by new world generator don't spawn witches
• MC-125451 – Crash when logging into multiplayer without logging into singleplayer first

From the previous development version

• MC-126111 – Furnaces don't award recipes or experience when output is taken after a reload
• MC-126150 – Furnaces don't account for multiple recipes with the same output when giving experience and smelting recipes

Video

Video made by slicedlime:

Trivia

• Unlike most of the first-of-the-week snapshots, this was released on a Thursday instead of Wednesday, similar to the snapshots before 14w26a.
• 18w09a was released exactly 6 years after 1.2.1 and 1.2.2.

References