Prince of Persia: The Sands of Time Cheats

Unlock Original Prince Of Persia Room
Start a new game with any profile. On the balcony where the game starts, do not go into the palace's room and instead, push in the left joystick and enter [Green], [Blue], [Yellow], [Red], [Yellow], [Green], [Blue], [Red] ([A], [X], [Y], [B], [Y], [A], [X], [B]).

Classic Prince Of Persia: Level passwords
Level 02 - KIEJSC
Level 03 - VNNNPC
Level 04 - IYVPTC
Level 05 - RWSWWC
Level 06 - GONWUC
Level 07 - DEFNUC
Level 08 - SVZMSC
Level 09 - DBJRPC
Level 10 - MZFYSC
Level 11 - BRAYQC
Level 12 - UUGTPC
Jafar battle - LRARUC

Unlock Original Prince of Persia
Beat the game and Prince of Persia 1 becomes available in the Extra Features menu.

Unlock Prince of Persia 2
Around 33% of the way into the game, you will receive a new sword. Continue on until you break a wall and the Prince says, "It's said they built this palace on the ruins of another..." Once you cross the next room, you will find a rotatable switch. Directly behind this switch is a breakable wall, although it doesn't appear to be one. If you hit it three times, you will find another room and you will receive a message informing you that Prince of Persia 2 is now unlocked.

You can also rotate that switch until it points to the new room and it will open a gate that allows you to play Prince of Persia 2 right there without having to exit back to the Extra Features screen.