Marvel Heroes is Marvel’s upcoming MMO Action RPG for the PC. You’ll be able to choose from an wide range of characters such as members of the Avengers, X-Men, Fantastic Four, amongst others. Its gameplay is somewhat similar to the Diablo games (action RPG), but its in an ‘MMO world’.
Marvel Heroes launches on June 4th for the PC. Oh yeah, did I mention it will be FREE to play?