Clockwork Knight
Level Select
999 Knights
Stage Select
Level Select
At the "Press Start" screen, press Left, Up , Right, Down, Right, Down, Right, Up, and R
999 Knights
At the Start screen, press Up once, Right nine times, Down six times, Left seven times, Z, X, Y, Y, Y, Z, START.
Stage Select
At the Start screen, press Left, Up, Right, Down, Down, Right, Right, Up, R and a Stage Select screen will appear. To play the last boss, add Left, Right, Right, Up, Right, Right, Up, Down, Right, Right, Up, R to the end of the Stage Select code.