X-Men: The Official Game - Nightcrawler's Danger Room
Nightcrawler's Danger Room!
At the main menu, select Cerebro Files, and then enter the following codes to unlock the corresponding cheats. If you entered a code correctly, you will see a confirming message onscreen.
Nightcrawler's Danger Room: Press Up, Up, Down, Down, Left, Right, Left, Right, Start.