Automatic Health Regeneration:
Connect your GBA to your GameCube. You must have the GBA PoP game in your GBA for this to work.

Unlock Original Game Without Using the GBA:
To unlock the original Prince of Persia game without using the Gameboy Advance, you'll need to start from the Above the Baths save (once you have your new sword). Go down the stairwell that leads to a large cavernous area. After you make it through this area, you'll end up in a small room with Farah. There are a lever and a gear in the center of the room. Turn it clockwise until it clicks twice. Both doors in the room are now closed, but you'll also open a secret door that you cannot see. Go to the wall directly opposite the entrance. Swing until you find a spot on the wall where your sword doesn't spark. Strike this area a few times to reveal a hidden room. Enter to unlock the game, which is now available on the main menu.

Unlock Original Prince of Persia:
Find and activate the three special GameCube switches in the GBA version of PoP, then connect your GBA to your GameCube.

Classic Prince Of Persia level passwords:
Level - Password
2 - KIEJSC
3 - VNNNPC
4 - IYVPTC
5 - RWSWWC
6 - GONWUC
7 - DEFNUC
8 - SVZMSC
9 - DBJRPC
10 - MZFYSC
11 - BRAYQC
12 - UUGTPC
Jafar battle - LRARUC

Hangman in A Prisoner Seeking An Escape level:
When you reach the bottom of the chamber in the A Prisoner Seeking An Escape level, kill all the sand creatures and then enter the cell to the left when looking at the save point. In the left corner of the cell is a little joke on the wall. Take a closer look in first person view at the drawings you find there. Obviously the prisoners where playing hangman here.

Tomb doors puzzle:
Near the end of the game, you are in a tomb with infinite doors. You have to find the correct series of doors to progress. Go to the landscape view. Always start at the door with the face above it and go clockwise. The order is:

1. Fourth door from the entrance
2. Seventh door from the entrance
3. Third door from the entrance
After you have successfully done this you will be taken to the second level of this room. It is almost the same, just with more doors. The order is:

1. Fourth door from the entrance
2. Ninth door from the entrance
3. Fifth door from the entrance