That does look pretty cool. It they built a very big world for him that would be good too. If it allowed you to fly into a building and through it and walk up a flight of step, open doors, etc. If it was possible to walk into all kinds of places and situations, that would be spectacular. Of course, in a video game, the challenge would be (like in a movie or book) to actually challenge Superman. A video game where you have to deal with a tsunami, or a Doomsday type of monster would be great. Otherwise, it would really be hard to present a challenge to Superman in a video game. The best part of it would be just to explore the Metropolis world.