Gatcha Heroes!
Genre- Hero Teams, Fantasy, Supernatural, Interdimensional Exiles
Category- Action/Drama/Comedy
Theme- Summon the Heroes

The PC's are some of many summoned heroes by young Princess Nyah (She is after all only 9) and pinning her hopes on summoning random people from across time and space to save her people from the evil Demon Lord by the name Mya.

Her demonic army has moved all over the world and stollen food, clothes, men, and other major necessities.
She has even set up a nation that she calls her's and that's just not fair since she doesn't belong here.

thus the reason to summon heroes to help, with the Gatcha summoning, everyone that arrives receives powers, even the infant crying in their mother's arms! (Obviously, it's crying because it's happy to help. not from the loud flash and bang of the summoning ritual. Even the nerdy summons are happy with a nation of Catgirls demanding help)

recommended games for this campaign - BESM, Mutants and Masterminds, and GURPS would work best I think for running this campaign. I've been writing it using MnM however.