MORTAL KOMBAT TRILOGY
Hints Page
Main Page 
MKT Page
Random Select: In the character selection screen go to starting
character (for player 1: Noob Saibot and for player 2: Rain) and press
Up + start
Stage Select: In the character selection screen go to Sonya and
press Up + start. After character selection you can select the stage by
pressing left, right and start buttons.
Hidden Options: Enter options menu and press Up + Run + Block.
Wait a little and then the screen shakes. Now you can select the green
question mark. You can find there one key fatalities and many others.