Alien World Mod?

Hey everyone. I'm in the process of trying to create a sci-fi save. I know we have Sixam, but it only has one lot. So far I've just been placing/building futuristic lots in the regular worlds, which works pretty great, but it would be nice if the sky and ground looked similar to Sixam in at least one world. Does anyone know of a mod that does this? I know there used to be one for Sulani that changed it into an alien world, but I can't seem to find it anymore. If there's not a mod for it, I'll consider using the TOOL mod to place some alien plants outside of the lots myself at least, but from what I've heard it would be a bit of a learning curve.