Altered

The altered mod adds a new dimension that looks like the overworld, but altered. Everything there looks and feels wrong. There are anomolies scattered about. Some things shouldn't be there, and yet they are. You can enter through depleted machines made by someone who dissapeared long ago. Making use of an unstable crystal that distorts reality around it, you can provide the portal generator with what it needs to open a gateway to another reality. Be warned, entering is much easier than exiting. Whoever made these portals didn't make any on the other side.