Still, if you de-render the floors and re-render them, having 100 floors would make the file extremely large. Also, you would have to go build each floor by hand, because they aren't randomly generated. It seems extremely inefficient. We will likely just have 1 floor at first, until we make new mobs, which will take a while. AIs aren't exactly a walk in the park. Most likely the first mob will just be a boar (re-textured pig model with zombie AI).