Primary Collection of Cheats
Big head mode
Successfully complete the game under the easy difficulty setting. Press [X], [A], [Y], [B]x3, [Up]x5 on controller D when the game returns to "Press Start Button" screen. A sound will confirm correct code entry.
Mirror mode
Successfully complete the game under the normal difficulty setting. Press [L], [Left], [L], [Right], [L], [Down], [L], [Up], [R], [Left], [R], [Right], [R], [Down], [R], [Up] on controller D when the game returns to "Press Start Button" screen. A sound will confirm correct code entry.
Random mode
Successfully complete the game under the hard difficulty setting. Press [B], [Left], [X], [Y], [X], [Y], [B], [A], [B], [A], [Right], [Left], [Right], [Left] on controller D when the game returns to "Press Start Button" screen. A sound will confirm correct code entry.
Play as Janet
Start a new game, then hold [Start] at the file screen until the mission begins.