Mortal Kombat (Plug and Play)
Fight against Reptile
Start a single player game. When you are at "The Pit" stage, win with a Double Flawless Victory and perform a fatality (not "The Pit" fatality) without blocking. A message will appear. After defeating Reptile you will be given with 1,000,000 points.
Win Endurance match 3 with Raiden and hold [Block] when it says to finish him. Continue holding [Block]. When Goro stomps the ground and roars, release [Block] during the first roar. The background will be dark, and you can go off the screen and still attack Goro.
When fighting Shang Tsung, get to the corner. When your opponent is close enough to sweep, do a teleport punch. They will turn and do a fireball. Do a spear, and when he morphs, the game will need to load each time.
Finishing the wrong person
Play a single player game and reach any endurance battle. After you kill the second opponent and the game says "Finish Him/Her", throw your foe and step over the dead body of your first opponent. Then, perform a fatality. Your fighter will perform the fatality on the first opponent. This has a different result for each of the different fatalities.
During a Mirror match with Raiden, perform a torpedo move just as you are standing up. Raiden will still be using his standing up palette colors.