1st 2025.3 snapshot - Minecraft 1.21.8 support

Published by Klemen on
1st 2025.3 snapshot - Minecraft 1.21.8 mod maker

The 1st MCreator 2025.3 snapshot is available, supporting the latest Minecraft version. It also contains many other improvements and bug fixes.

3 Minecraft versions?

As we often do when porting to a new Minecraft version, the 1st MCreator 2025.3 snapshot supports Minecraft 1.21.1, Minecraft 1.21.4, and Minecraft 1.21.8 at the same time. In the next snapshots and in the full release, we will only support two versions.

Snapshot changelog

This is a full changelog of this snapshot with more notable changes highlighted with bold text.

  • Updated NeoForge for 1.21.4 to 21.4.145
  • Updated NeoForge for 1.21.1 to 21.1.190
  • Minor UX improvements and standardizations
  • Workspace file browser now retains expansion state after search is completed
  • Dragging the mouse while placing the component now enters resize mode in the GUI editor
  • Added Minecraft resource pack generator for 1.21.8
  • Added base support for NeoForge 1.21.8
  • Added Minecraft data pack generator base for 1.21.8
  • [A 1.21.x] Added new Minecraft blocks, items, and entities to data lists
  • [DP 1.21.8] Added support for: functions, advancements, biomes, damage types, dimensions, enchantments, loot tables, recipes, structures, features
  • [NF 1.21.8] Added support for: key bindings, variables, global triggers, banner patterns, damage types, tags, advancements, enchantments, functions, loot tables, recipes, structures, features, commands, custom code, sounds, paintings, potion effects, particles, potion items, attributes, game rules, villager professions, item extensions, armor, OBJ models, JSON models, Java models, creative tabs, projectiles, villager trades, biomes, dimensions, fluids, tools, overlays, GUIs, items, plants, procedures, living entities, blocks
  • [Bugfix, NF 1.21.1] Non-food items with eat or drink animation emitted eating sounds
  • [Bugfix] Certain parameters of the quick ore pack and wood pack tools were set incorrectly
  • [Bugfix] Vanilla entries in custom game event tags did not work correctly
  • [Bugfix] Dragging the mouse while placing a new GUI component placed it at the wrong location
  • [Bugfix] If the Blockly editor crashed while saving, the block assembly was lost and became invalid
  • [Bugfix] Contents of certain selector dialogs did not get updated in all cases
  • [Bugfix] Custom GUI image button display condition did not pass world coordinates
  • [Bugfix] Quotation marks in living entity text synced data default value caused build errors
  • [Bugfix] An exported mod file was generated even if the workspace build failed
  • [Bugfix] Workspace file browser did not refresh in some cases
  • [Bugfix] Continue/break loop procedure blocks did not work with certain iteration blocks
  • [Bugfix] Structure mod element did not work in data pack workspace types
  • [Bugfix] Some other minor fixes and improvements

A snapshot download is possible on the Download page under the Snapshot downloads section. 

Make sure to download and install the pre-release so you can test it out. This way, we can make sure the release can be as stable as possible. Leave a comment with your feedback on the update below. Stay tuned and keep on modding!

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Comments

3 Minecraft versions?
As we often do when porting to a new Minecraft version, the 1st MCreator 2025.3 snapshot supports Minecraft 1.21.1, Minecraft 1.21.4, and Minecraft 1.21.8 at the same time. In the next snapshots and in the full release, we will only support two versions.

as you said there will only be two versions and they will be 1.21.4 and 1.21.8?

This is amazing but have you fixed the transparency option just randomly dissapearing in the texture editor, and are you guys ever gonna add a custom tree shape option, if so ive got an idea on how, you could make it so you could insert a structure and it would have a dropdown with 2 options the normal structure and a tree.

What about the addon system being updated for the changes it has had like custom biomes being fixed, new things in general, etc?

Custom addon biomes not working is a bug of Minecraft Bedrock Edition itself, we are still waiting for them to fix it. I recommend getting in touch with Mojang on more information on the bug and if they plan to fix it. More specifically, check the issue on their bug tracker and comment there if you need more info

What was the addon script engine update for custom biomes then?
"
Add-Ons and Script Engine
Custom biome names are no longer implied by their filenames. Biome names are explicitly specified via the "identifier" property under the "description" sub-object of their JSON definition.
Biome identifiers must now be namespaced (ex: "minecraft:plains"). Client biomes with a format version lower than 1.21.90 will have their identifier automatically prefixed "minecraft:" when loaded if no namespace is already specified.
Updates biome documentation to match updated biome JSON formatting and requirements.
Biomes client settings now look up settings based on the biome's full name, including its namespace. Vanilla biomes will fall back on their name without a namespace if an exact match is not found before falling back on default settings (for example, "minecraft:plains" will match itself, then "plains" if no setting was found)
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