While superheroes may have taken over Hollywood, the video
game world has been harder for them to conquer. Although recent games featuring Iron Man and Spider Man have very well, they haven't fired up gamers the way that a typical GTA or Madden NFL release does.
Why? Maybe that's because video game protagonists are already superpowered. Perhaps its because we know that Marcus Fenix or Master Chief could probably kick Batman's ass. Gamers like their heroes homegrown, although comic-book stars are welcome into our virtual world, for the most part at least.