ATG adds a new world type which entirely replaces the base method of creating the world.
Vanilla generation creates “blobs” of land within the world and assigns random biomes to each, shuffling them around a bit to add rivers and such. The height and shape of terrain within these areas is determined by the biome, not the rest of the world.
ATG completely changes this, instead creating height, temperature and moisture maps for the world and deriving the final biome based upon those. Higher areas are colder, areas away from the sea and where the temperature is high tend to be dryer.
ATG currently supports vanilla and Extra Biomes XL. ATG itself is compatible with others, but they won’t appear in ATG worlds
- Download and install installer
- Download zip file
- Put zip file into your /.minecraft/mods folder. Do not unzip it. If you don’t have a mods folder, create it
- Make sure to select “ATG – Alternate” as the world type when making a new world. If you want to run ATG on a server, set the world type in the server.cfg to “ATG”.