Summary: When you get this game just open up steam go to your library, go to the bottom left hand corner and click activate game on steam, when it tells you to enter the code, just locate the code that came with your game it will look like so xxxxx-xxxxx-xxxxx-xxxxx. Enter it, and then you have to wait while the entire game downloads from steam.
Summary: Prior to this, a videogame from a movie or comic book or superhero saga always flop. Batman Arkham Asylum buck the trend and show how it supposed to be done. Best superhero based game at the time it launched. Definitely a classic.