Mortal Kombat Mythologies: Sub-Zero 

Start at the final stage 
Enter "ZCHRRY" as a password to start at the Fortress with 20,000 experience points.
Then, if you die before a checkpoint, press L1 to fight Quan Chi or L2 to fight Shinnok.

Invincibility 
Enter "TDFCLT" as a password.

1000 lives 
Enter "GTTBHR" as a password.

Infinite urns 
Enter "NXCVSZ" as a password.

View exploding Earth Boss 
Enter "RCKMND" as a password.

View credits 
Enter "CRVDTS" as a password.

Outtake FMV sequence 
Reach Shinnok with more than five urns of vitality.
Then, defeat Shinook and enter the portal. Now wait until the credits end to view the bonus FMV sequence.

Level passwords 

Level Name         Password
2                  WindTHWMSB
3                  EarthCNSZDG
4                  WaterZVRKDM
5                  FireJYPPHD
6                  Prison RGTKCS
7                  Bridge QFTLWN
8                  Fortress XJKNZT