Mortal Kombat 4 Codes -

Alternate costumes:
Hold Start and press any button two times to rotate the select screen pictures to enable each character's second costume, except for Sonya and Tanya. The select screen pictures must be rotated three times for those characters.

To get Kai's gangster costume and Noob's grim reaper costume, hold Start and press any button three times before selecting that character. To get Reptile's original ninja costume, hold Start and press any button two times before selecting him.

Johnny Cage's James Bond costume:
Select arcade mode from the title screen. Highlight Johnny Cage, hold Start and press Low Punch(3) at the character selection screen. Johnny Cage will be dressed exactly like James Bond. Draw his weapon during a match to see a larger version of Bond's PP7 gun.

Cheat option:
Highlight the "Continue" selection on the options screen. Hold Run + Block (C-Left + C-Down by default) until the cheat option appears and the word "Outstanding" is spoken. The cheat options include "Endings", "Fatalities 1", "Fatalities 2", and "Level Fatalities". The "Level Fatalities" option will allow the spike fatality to be executed on any level.

Automatic fatalities:
Enable the "Cheat option" code, then turn on the "Fatalities 1" selection. Then execute an uppercut from anywhere on the screen.

Automatic level fatalities:
Enable the "Cheat option" code, then turn on the "Level Fatalities" selection. Then press Down + High Punch when close to your opponent at the "Finish Him" prompt. Note: The best place to execute the level fatality is the level with the big fan.

Automatic endings:
Enable the "Cheat option" code, then turn on the "Endings" selection. To see a character's ending without defeating all the fighters, enter arcade mode and defeat just one character.

Fight as Goro:
Successfully complete the game with Shinnok and save the game. Enable the "Cheat option code". Select the invisible icon at the bottom of the character selection screen. Press Up(3), Left to highlight Shinnok's icon, then press Run + Block (C-Left + C-Down by default). Note: Goro can not be saved to the controller pak and must be enabled again after the Nintendo 64 is powered off.

Alternatively, successfully complete the game with Shinnok and save the game. Enable the "Cheat option code". Select the invisible icon at the bottom of the character selection screen and hold C-Down. Then, press Up(3), Left, and hold C-Left until "Choose Your Destiny" is heard.

Fight as Noob Saibot:
Successfully complete the game with Reiko and save the game. Then, enable the "Cheat option code". Select the invisible icon at the bottom of the character selection screen. Press Up(2), Left to highlight Reiko's icon, then press Run + Block (C-Left + C-Down by default). Although Reiko will appear at the "Choose Your Destiny Screen", Noob Saibot will appear in the match. Note: Noob Saibot can not be saved to the controller pak and must be enabled again after the Nintendo 64 is powered off.

Fight as Meat:
Enable the "Cheat option code". Enter "Group Mode" and successfully fight as all sixteen characters. After this has been accomplished, select any character and begin a match. Your character will playing as Meat with all the moves of the character that was selected. Note: Meat can not be saved to the controller pak and must be enabled again after the Nintendo 64 is powered off.

Hint: Quick weapon draws:
Execute the "draw weapon move" very quickly during any combo with any character.

Hint: Knock opponent into the screen:
Select Rayden, Reiko, or any character with a club for a weapon. Press Low Punch (A by default) to attack. If successful, the weapon will send your opponent flying into the screen.

Hint: Swing a rock like a regular weapon:
Have players one and two press C-Right(2) at the Kombat Kodes screen to enable weapons combat. Select a two-on-two match and play in a stage that contains rocks . Allow the first of your two fighters to die. When the second fighter comes in, he will not have a weapon. Go to a rock and press C-Down to collect it . Your fighter will act as if he is going to throw it, but will hang on so it can be swung.