Biomes
Create a mod that adds 3 biomes: -Xmas_ice -Xmas_taiga -Xmas_polar They are all similar to the snowy_plains biome
Biomes mod adds three snowy variants - biomes:xmas_ice, biomes:xmas_taiga, and biomes:xmas_polar. Each biome copies the snowy plains settings (snow weather, temperature, feature placement, and spawn tables) so they behave like snowy plains once present in a world.
The biomes are defined via data pack JSON and are added to the same structure/spawn tags as snowy plains (igloos, snowy villages, pillager outposts, mineshafts, trial chambers, stronghold bias, ruined portals, snow foxes, cold animals, and white rabbits) plus the minecraft:is_overworld tag. This keeps structures and mob behavior aligned with the vanilla snowy plains experience.
A simple client initializer (com.example.biomes.BiomesClient) exposes the biome registry keys and logs when the pack is loaded. The mod is marked as client-only, so it will run in singleplayer or on clients connecting to a compatible server.
Note: The biomes are provided and tagged but aren't force-injected into the overworld's climate map; use a world preset/datapack that references them or place them via commands to encounter them naturally. Future work could add a custom preset or generator hook if you want them to appear in normal world generation automatically.