5: Risugami’s Biosphere Mod
This is one of the really big ones, it’s a mod that fundamentally changes the way Minecraft’s worlds are built. Instead of separating the world into neat little divisions of “naturally” occurring landscapes, the Biosphere Mod has Minecraft create a world, that entirely consists of glass encased bubbles, that float in thin air, each of which containing a separate biome.
Those “biospheres” are interconnected by little bridges, and generate “naturally”, so completely at random. It’s a pretty radical alteration, and to top things off, this world generation can be combined as it seems with regular world generation, by turning this mode of generation on and off in the options menu. It certainly gives you a completely different game if you’re sick of your regular Minecraft world. Get it here!