sky islands is a mod that takes care of giving us a new generation of terrain, which consists of a world full of floating islands. These islands will have different sizes, and will be composed of different types of biomes, either one biome per island, or an island that contains several biomes on the same island.

By default, after installing the mod, this new terrain type will not be generated. To do this we will have to generate a new world, and in the world type options we will have to choose the “Skyland” option. After choosing this option and creating the new world, the new terrain type, formed by floating islands, will start to be generated.

This mod is also compatible with the biomes generated in the Biomes O’ Plenty mod, so if we also install said mod, new islands will be generated with the Biomes O’ Plenty biomes, as we can see in the example of the picture below.