Looking for Heroes-style supers game
There are quite a few superhero games around, but personally, I'm not a huge fan of playing in an established setting or one where superpowers are already well-established and the sight of a cape or two during your commute is nothing new or interesting. What I'm looking for is a game taking place in a world much like the real world, where the PCs are the first superpowered people around - or at least the first they know of. The focus (at least initially) should be on figuring out their new abilities without killing themselves in the process, trying to keep them under wraps, and so on (with villains or other threats showing up before too long, of course).
Although I've been speaking of PCs in plural, I could also do a solo game if a GM is up for that. I'm not too fussed as far as system goes, but I'm most familiar with Mutants&Masterminds and GURPS.