Cheat mode: Press Start to pause game play. Then, hold L + R and press Down, Left, Up, Right to enable cheat mode. This will allow the other codes to be activated, as well as unlock all costumes.
Invincibility: Press Start to pause game play. Then, hold L + R and press Left, Down, Right, Up, Left, Down, Right, Up.
Unlimited Superpower: Press Start to pause game play. Then, hold L + R and press Down(2), Right(2), Up(2), Left(2).
Maximum abilities: Press Start to pause game play. Then, hold L + R and press Right, Down, Right, Down.
35 random boosts: Press Start to pause game play. Then, hold L + R and press Left, Right, Left, Right.
20 shields: Press Start to pause game play. Then, hold L + R and press Up(2), Down(2).
Bonus heroes: The following characters can be unlocked by spending the indicated amount of Justice League of America shields that can be collected during game play.
Aquaman: 27 shields Green Arrow: 76 shields Green Lantern (Hal Jordan): 84 shields Green Lantern (Kyle Rayner): 55 shields Hawkgirl: 70 shields Huntress: 53 shields
Alternate costumes: The following characters can be unlocked by spending the indicated amount of Justice League of America shields that can be collected during game play.
Completion bonuses: Successfully complete the game to unlock the "Continued Play" option (to allow a new game to be started with all previous stats and items unlocked" and an alternate main menu background (with characters from the game).
Fast health recovery: Upgrade your health recover and the strongest weapon for the character you are currently using. For example, upgrade the Flash's Whirlwind ability or Wonder Woman's Tiara throwing ability with Damage and Duration boosts. All the characters lose health quickly to most any kind of attacks. It is wise to have a fast recovery of health. Use the Speed Boosts in all the recovery slots
