One of the many things that The Hitchhiker's Guide to the Galaxy taught me is that there are multiple dimensions out there... or out here... or... just... in existence. So in some other dimension, super heroes exist. Unfortunately, we got sort of a lame-o dimension and we just get to read about super heroes in our fiction and in our RPGs. Aegis Studios, with their Superstring Multiverse books, let your Mutants & Masterminds characters travel to alternate dimensions in order to fight crime. The second book is now available.