Prince of Persia - The Two Thrones - Platform: Gamecube

Baby Toy of Death:
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At the pause screen enter the following code: Left, Left, Right, Right, 
X, Y, Y, X, Up, Down.

Chainsaw:
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At the pause screen enter the following code: Up, Up, Down, Down, Left, 
Right, Left, Right, X, Y, X, Y.

Restore all sand slots:
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While playing a game, hold B on controller four, then quickly press 
X, X, A, B, B, A, Y, Y on controller one.

Alternate ending sequence:
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Collect all the life upgrades to fight the Dark Prince instead of 
Vizier at the end.

Sand Gate rewards:
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Deactivate the indicated number of Sand Gates to earn the reward:

Fourth Sand Tank: 1 Sand Gate
100 Sand Credits: 2 Sand Gates
Eye Of The Storm Time Power: 3 Sand Gates
Fifth Sand Tank: 4 Sand Gates
150 Sand Credits: 5 Sand Gates
Winds Of Sand Attack: 6 Sand Gates
Sixth Sand Tank: 7 Sand Gates
200 Sand Credits: 8 Sand Gates
Sand Storm Attack: 9 Sand Gates

Telephone of Sorrow:
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Complete the game in Normal mode. At the pause screen enter the following code: 
Right, Left, Right, Left, Down, Down, Up, Up, X, Y, X, X, Y, Y.

Unlock Swordfish weapon:
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At the pause screen enter the following code: Up, Down, Up, Down, Left, Right, 
Left, Right, X, Y, X and Y.

Video Gallery:
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Successfully complete the game to unlock the Video Gallery.

Female Voice credits:
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Play through the game until getting to the large courtyard just before the 
first chariot sequence, during your second Dark Prince transformation. 
Look in the corner of the courtyard to find a hole in the ceiling which 
enemies appear from until you leave the area. Stab and hang from the panel 
near that hole to open the exit. Climb the pole nearest to the hole in the 
ceiling to hear a monotone female voice announce the game's voice credits.