This is a very simple but very useful mod. It allows you to pick another option in the world creation menu that forces the whole world to be of a certain biome type. This is especially useful for creating adventure or survival maps in a certain biome.
Picking, for example, a forest world, spawns you right in a forest and the whole world is one big forest!
There are many world types, including swamplands, jungle, forest, and ice mountains. Check out ice mountains!
Minecraft Mod Download Instant Blocks Mod 2014 MineCraft Free Mods Texture Packs Map Skin Tools Seeds Download.