Alternate Terrain Generation Mod 1.13.1/1.12.2 for Minecraft



What is Alternate Terrain Generation Mod?

ATG Mod 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


A cold shoreline, with gravel and sandy gravel beaches.

Mountainside with EBXL trees and river.

Rivers don’t always work as well as they might…

Swampy shoreline.

A rolling shrubland area.

Shrubland and EBXL meadows.

A snowy coast with steppe on the left.

A forested valley.

Another view of the same valley.

There are still a few issues with generation at the interface between deserts and hilly zones.


Tundra dotted with steppe.

Large mountain in a cold, dry area.

Swampy coastal inlet.

Flat terrain exists, but at higher altitudes than vanilla.

Swampy coasts cause small cliffs.

Mountain slopes can be very steep, but tend to not be sheer cliffs.

Volcano lava spout – these are found on the highest mountains and reach to bedrock.


Another swamp coast, showing layered plateaus up a hill.

A hilly desert.

Mountain slope.

Gravel beaches appear when temperature drops, but before snow.


Transitional biomes: Meadow/plains -> shrubland -> woodland -> forest.

EBXL autumn trees appear as groves in forests.

A cold valley.

Boreal forest.

Wooded hillside.

A lake between two mountain ridges.

A wooded coast at the interface between hot and temperate.

Sandy coastal areas are common where the sea gets shallow.

How to install Alternate Terrain Generation Mod 1.13.1

Learn how to install Alternate Terrain Generation Mod correctly for the latest versions of Minecraft and earlier also, this is compatible with Minecraft 1.13.1 and 1.12.2!

  • Download and install Minecraft Forge API.
  • Download and install Optifine HD (To improve the graphics and performance of minecraft with mods).
  • Download the mod from the link above.
  • Go to Start Menu > Type %appdata%/.minecraft and press Enter. The Minecraft root directory will open.
  • Go to Mods folder (/.minecraft/mods) and copy the Jar (or Zip) file there that you downloaded.
  • Enjoy the Mod!

Download Alternate Terrain Generation Mod

The download links may be outdated, so we recommend you always check the website or Thread of Alternate Terrain Generation Mod on Minecraft Forum or Curse.