Mortal Kombat 2

This tricks works on the "Dead Pool" stage (the one with the green acid in the background.)

When the screen says "Finish Him!", hold Low Punch + Low Kick, press and hold Down, then press High Punch. If you did it right you'll send your opponent into the acid.

AT THE OPTION SCREEN PUT THE CURSOR ON DONE THEN PRESS LEFT, DOWN, LEFT, RIGHT, DOWN, RIGHT, LEFT, LEFT, RIGHT, RIGHT,

To do a fergality, enter Test Mode, then change the background to 6 and enable the "Ooh Nasty" option. Next choose Rayden as your character and finish your opponent with Away, Away, Away, Block.

To fight Jade, make your way to the match before the question mark. Defeat your opponent with only the Low Kick button and your joystick. If you succeed, Jade will be your next opponent.

To fight Noob the Faceless, win 25 matches in a row and you'll see the message, "Incredible winning streak! A new warrior awaits you." After he kicks the stuffing out of you, you can try another 25 in a row and give him another shot. Good luck!