Mortal Kombat 1: Fight as Goro
Complete the game. Hold [Up/Left] + [A] + [Select] when the phrase "The End" appears after the credits. Continue to hold the buttons until the initials entry screen appears. Enter your initials and press [A], the press [Start] at the high score screen. The message "Goro Lives" will confirm correct code entry. When fighting as Goro, hold [A] + [B] and press [Down]. Goro will disappear and the match timer will count down quicker. Additionally, your opponent will cycle through the same move and will not be able to hit you.
Complete the game. When the text "The End" appears, hold [Up/Left] + [Select] + [A] until the title screen appears. Enter your initials, then press [A].
Mortal Kombat 1: Kombat Kodes
Enter one of the following Kombat Kodes to activate the corresponding function.
| Effect | Kombat Kode |
| Player 2 at 25% power | 000-707 |
| Player 2 at 50% power | 000-033 |
Mortal Kombat 2: Fight against Jade
Win the stage immediately before the "?" stage using only kick attacks without blocking.
Mortal Kombat 2: Fight against Smoke
Continuously use the uppercut move against your opponent on the Bridge stage until the "Toasty" face appears. Immediately hold [Down] and press [Start].
Mortal Kombat 2: Expert mode
Press [Down]x2 at the "Choose Your Destiny" screen to play with only one kredit.
Mortal Kombat 2: Random fighter
Hold [Up] and press [Start] at the character selection screen.
Mortal Kombat 2: Kombat Kodes
Enter one of the following Kombat Kodes to activate the corresponding function.
| Effect | Kombat Kode |
| Player 2 at 25% power | 000-707 |
| Player 2 at 50% power | 000-033 |
| Enable Reptile | 192-234 |
Mortal Kombat 2 Reptile Ultimate fatality
Fight as Reptile and get a "Finish him/her" message. Very quickly do Reptile's Energy Ball. While the ball is floating toward your opponent, quickly enter the Headsnack fatality. If done correctly, your opponent should be blasted into the air by the energy ball and should still be in the air doing a flip when you eat his/her head.
Mortal Kombat 2: Kitana Moves
Fanlift: Press [Away]x3, [Punch].
Fanslice: Press [Away], [Punch].
Square Wave: Press [Down], [Toward], [Away], [Punch].
Fanthrow: Press [Toward]x2, [Punch] + [Kick].
Fancut fatality: Press [Block]x4, [Kick].
Mortal Kombat 2: Melina Moves
Saithrow: Hold [Punch] for three seconds, then release.
Roll: [Away]x2, [Down] + [Kick].
Teleport Kick: Press [Toward], [Toward] + [Kick]
Inhale fatality: Hold [Kick] for three seconds, then
release/
Mortal Kombat 2: Scorpion Moves
Spear: Press [Back]x2, [Punch].
Fatality: Press [Block], [Up]x2, [Punch].
Mortal Kombat 2: Sub Zero Moves
Freeze: Press [Down] + [Toward] + [Punch].
Ground Freeze: Press [Down] + [Away] + [Kick].
Babality: Press [Down], [Away]x2, [Kick].