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Minecraft Snapshot 20w20a

A Minecraft Java Snapshot

This week we are releasing a bit of a smaller snapshot. However, if you're into switching game modes and completing advancements, this is right up your alley!

Edit: We've now released 20w20b to fix a bug.

Fixed bug in 20w20b

New Features in in 20w20a

  • Added new Game Mode Switcher debug menu
  • Added new Nether Advancements

Game Mode Switcher

New F3 debug feature which allows you to switch game modes with traditional "tabbing" functionality.

  • Hold F3 and tap F4 to open the menu
  • Tapping F4 will cycle the game mode, or you can use the mouse
  • Release F3 to apply
  • Your last game mode is remembered and will be the first selected option, so you can quickly toggle between two game modes with a single press of F3 + F4!

F3 + N (Toggle Spectator)

A small change has been made to this debug combination.

  • By default, using this key would return to Creative after toggling from Spectator. It now will toggle back to the previous game mode you had
  • As an example, if you were in Survival, then toggled to Spectator and back, you would be set back to Survival

New Advancements

  • Hidden in the Depths unlocks when obtaining Ancient Debris
  • Cover Me in Debris unlocks when obtaining full Netherite armor
  • Country Lode, Take Me Home unlocks when using a Compass on a Lodestone
  • Who Is Cutting Onions? unlocks when obtaining Crying Obsidian
  • Not Quite "Nine" Lives unlocks when setting a Respawn Anchor to the maximum
  • This Boat Has Legs unlocks when riding a Strider with a Fungus on a Stick
  • Hot Tourist Destinations unlocks when visiting all Biomes in the Nether
  • Those Were the Days unlocks when entering a Bastion Remnant
  • War Pigs unlocks when looting a chest in a Bastion Remnant
  • Oh Shiny unlocks when distracting an angry Piglin with gold

Changes in 20w20a

  • The Bullseye advancement now unlocks when hitting the bullseye of a target block from at least 30 meters away
  • The Serious Dedication advancement is now awarded for obtaining a Netherite Hoe
  • Obtaining Blackstone now also counts for the Stone Age advancement
  • Breeding Striders now counts for `The Parrots and the Bats` and is now required for Two by Two

Technical Changes in 20w20a

  • Shulkers with NoAI can now be summoned with rotation.
  • Added thrown_item_picked_up_by_entity advancement trigger
  • Added player_generates_container_loot advancement trigger
  • Added item_used_on_block advancement trigger
  • Removed safely_harvest_honey advancement trigger


thrown_item_picked_up_by_entity trigger type


  • item matches the thrown item which was picked up
  • entity matches the entity which picked up the item

player_generates_container_loot trigger type


loot_table matches the resource location of the generated loot table

item_used_on_block trigger type


  • location matches the location at the center of the block the item was used on
  • item matches the item used on the block

Miscellaneous trigger changes

  • location got a new propertysmokey which checks if the location is closely above a campfire
  • entity_properties got new properties vehicle and targetedEntity which match the vehicle or the entity targeted by a mob

Fixed bugs in 20w20a

  • MC-118234 - Advancement ‘Not Today, Thank You’ can be triggered by non-arrow projectiles
  • MC-173207 - Bullseye advancement can be made when using a non-arrow projectile, even though the description explicitly mentions arrows
  • MC-173756 - Ice Bucket Challenge advancement can be obtained by collecting obsidian from bartering
  • MC-175992 - Striders are not part of the “Two by Two” advancement challenge
  • MC-179481 - Structure block offset can’t be bigger than 32
  • MC-182967 - Throwing ender pearl whilst mounted doesn’t teleport you

Get the snapshot

Snapshots are available for Minecraft: Java Edition. To install the snapshot, open up the Minecraft Launcher and enable snapshots in the "Installations" tab.

Snapshots can corrupt your world, so please backup and/or run them in a different folder from your main worlds.

Cross-platform server jar:

Report bugs here:

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Adrian Östergård
Adrian Östergård

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