Warner Home Video has alerted Superhero Hype! that the new Superman Returns DVD, hitting stores on the 28th, includes a “cheat” for the videogame, now in stores. To enter “Bizarro Rampage Mode,” do the following:
Enter in the cheat code found on the “Superman Returns” DVD and have the ability to play as Bizarro, as long as you like. Simply enter the code and fly to the top of the GNN building where you will have the ability to transform to playable Bizarro. Wreak havoc throughout the entire open world of Metropolis as Bizarro for an unlimited amount of time, and simply fly to the threat indicator located at the other end of Metropolis to change back to Superman.
Source: Warner Home Video