Multiverse 2 allows Server Owners and Solo Players to add "Subworlds" to their World, Similar to the Multiverse Bukkit Plugin for Minecraft.
Subworlds are worlds that are connected to a main world and can have various World Generators that are fully extendable and can be expanded upon by mod developers.
If you have ever run out of space in your world on your server, with this you can expand into other alternate worlds. There is also a Flat World Generator ideal for mining Vanilla ores (Modded ores are added to the world specifically for Vanilla world gen and there is no uniform way that modded ores are added to worldgen that I can use to add them to my custom generators.) If the subworld is using the Vanilla World Generator, then all ores including modded ones will be generated, along with any biomes and structures.
