Java Edition 1.18 experimental snapshot 3

1.18 experimental snapshot 3 is the third experimental snapshot for Java Edition 1.18, released on August 10, 2021, which makes numerous changes to world generation and fixes bugs from previous experimental snapshots.

World generation

 * Stony peaks
 * A new mountains biome that is a variant of lofty/snowcapped peaks that uses stone and gravel instead of snow and ice
 * Is used to avoid temperature clashes.

Mobs

 * General
 * Mob spawning no longer speeds up in low terrain or slows down in high terrain. The new spawning speed is similar to 1.17 spawning at Y=64.
 * This change is intended to make spawning more consistent in the updated overworld.

World generation

 * Aquifers
 * Aquifers can go deeper and are more likely to connect with cave systems further down.
 * Added more high-frequency variation to aquifers, to reduce the risk of massively huge areas with waterfilled caves everywhere.
 * Underground lakes and flooded regions are more likely to be spread out instead of concentrated in one region.


 * Badlands
 * Tweaked badlands so they sometimes show up in flat areas next to plateaus, and made the red sand generate higher up (to account for the generally higher terrain).
 * Eroded badlands no longer create floating pillars on top of the water surface.


 * Beaches
 * Tweaked beaches a bit, to make them more inclined to show up on flat coastlines rather than hilly areas.
 * Reduced the amount of stone shores.


 * Desert temples
 * Desert temples spawn on the surface rather than at a fixed y level.


 * Mountains
 * Made peak biomes and meadows less likely to generate in flat low elevation areas.
 * Snowy slopes and snowcapped peaks no longer place dirt under the snow.


 * Pillager outposts
 * Now generate in all the new mountain biomes.


 * Swamps
 * Swamps are less likely to overlap cold or dry biomes, and they no longer place hanging water.


 * Villages
 * Now generate in meadows.


 * Biomes
 * Tweaked biome placement to reduce the risk of temperature clashes.
 * Tweaked biome placement to allow for more noisiness and diversity again.
 * This allows for the reintroduction of microbiomes.


 * General
 * Smoothed out the cliffs in shattered terrain a bit, so they don't look like chunk errors.
 * Coastlines and river banks are less likely to get messed up by aquifers.
 * Local water levels are mostly used in terrain that doesn't border a river or ocean.
 * Cave openings and ravines that intersect an ocean or river will mostly use sea level.
 * Inland low-elevation areas are less likely to have flooded caves all over the place.
 * Grass no longer generates under water.
 * Reduced the risk of incorrect surface placement.
 * Reduced the risk of river biome generating in dry mountain gorges.

Fixes

 * Fixed goats not spawning in the new mountain biomes.
 * Fixed an issue where players in multiplayer can face far more or far fewer enemies than intended, particularly when other players are flying.

Issues
This version is not supported on the bug tracker, and therefore issues affecting it will be resolved as "Invalid".