It's hard to make a good superhero game but nearly impossible to make a good superhero team game. Characters like Superman, Spider-Man or The Hulk are hard enough to make work when the entire game is focused on them, but trying to put a bunch of heroes into a single game usually leads to iffy results, such as the lackluster Justice League games. The one notable exception to this has been the Activision superhero titles, X-Men: Legends and Marvel: Ultimate Alliance. The two games are effectively part of the same franchise, with Legends being focused around the X-Men, while Ultimate Alliance featured the whole Marvel universe.
