Here are some cheats and tips for the game Clockwork Knight.
Level Select:
At the title screen, press Left, Up, Right, Down, Down, Right, Right,
Up, and R.
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999 Lives:
At the title screen, press Up, Right nine times, Down six times, Left
seven times, Z, X, Y, Y, Y, Z. Start a game and you�ll have almost
unlimited lives.