July 16, 2025Jul 16 im new to minecraft java modding and I am looking for some help on adding a custom dimension to minecraft java version 1.21.1 I haven't managed to find a good 1.21.1 minecraft dimension turtorial for intellij modding. all I could find online is how to make the json files for the custom dimension but not how to setup the custom dimension in the game. im using forge's recommended version for minecraft 1.21.1, any help would be appreciated Edited July 17, 2025Jul 17 by BruhMoment
August 8, 2025Aug 8 Been doing this today and had some success. Using these generators you can easily make the .json files needed https://misode.github.io/dimension/ https://misode.github.io/worldgen/biome/ https://misode.github.io/dimension-type/ I have them structured like this: resources/data/<yourmodname>/ ├── dimension/<your_dimension>.json ├── dimension_type/<your_dimension_type>.json └── worldgen/biome/<your_biome_name>.json Again, im just starting out but this is currently working.
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