Minecraft Update 1.18 Snapshot 21w42a Patch Notes Today (October 20)

Check out the details for the latest Minecraft 1.18 Snapshot!

October 20, 2021

Minecraft 1.18 Snapshot 21w42a is set to deploy later today and will hopefully include plenty of bug fixes and new features.

With a precise release date for the full 1.18 update still not confirmed, the only way fans are able to keep their anticipation levels down is by jumping into the new weekly snapshots.

These snapshots aim to let the developers release a small number of features each time, with players being able to test them and report any bugs found so that they can be rectified by the time the full release comes around.

So, what can fans expect from this weeks new 21w42a Snapshot? Well, check out the full patch notes right here in this article.

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Minecraft 1.18 Snapshot 21w42a Release Time

Although an official release time hasn’t been set by Mojang Studios for the release of 21w42a, the new updates are usually released every Wednesday between 7AM PT / 10AM ET / 3PM BST and 8AM PT / 10AM ET / 4PM BST.

But the exact time may vary depending on any issues that arise on the developers’ side.

Occasionally, weekly snapshots are sometimes delayed by a day. There is currently no word on a delay, and 21w41a should be set to arrive later today (October 13). If a delay to the new Snapshot is announced, we will update this article.

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Minecraft 21w42a Patch Notes

Below you will find the official patch notes for the latest Minecraft 1.18 Snapshot, 21w42a.


  • New music has been added to the game
  • Added world autosave indicator for single-player worlds


  • Added new music by Lena Raine and Kumi Tanioka to the Overworld (when playing in survival mode) and to the main menu
  • Added a new music disc from Lena Raine titled ‘Otherside’. This can be found on rare occasions in Stronghold corridor chests or much more rarely in Dungeon chests.


  • World spawn selection algorithm has been reworked, now spawns player according to climate parameters
  • World generation tweaks


  • Lava springs can generate in mountains and snowy terrain
  • Water springs don’t generate higher than y 192, and are slightly less common
  • Badlands gold generates higher up


  • Replaced light and barrier particles with block_marker



  • Renders with texture declared in particle slot for model assigned to configured block state
  • Summoned with same syntax as block particle (i.e. block_marker wheat[age=2])


  • MC-129912 – Player no longer spawned at highest level at world spawn
  • MC-132347 – Spawning inside icebergs
  • MC-214288 – Player does not spawn on the surface of the world when min_y is greater than 0
  • MC-233771 – Parity issue: Light blocks do not display their light level when shown via a held light block item
  • MC-236837 – The player can occasionally spawn underground when loading into a new world
  • MC-238582 – Beaches generate between desert and ocean
  • MC-238900 – Values of ‘Infinity’ in noise settings in default worldgen
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Kyle Knight

Kyle (He/Him) is a Film and TV graduate from Coventry. He's a PC enthusiast with a not so enthusiastic PC and is all about triple-A titles!

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