Here are some cheats and tips for the game Reign of Fire.
Master code:
Press X, Y, White, Black, X, Y, X at the main menu.
Invincibility:
Press White, X, Y, Black, X, Y, Black during game play.
Level skip:
Press X, Black, Y, Black, X, White, Y during game play.
Double damage:
Press X, Black, X, Y, X, White, X during game play.