Mortal Kombat 4
Change Fighting Order
When at the "Chose Your Destiny" screen, Press Start on the controler. This will make the highlighed Tower rotate and a new line-up of fighters will become sellectable, some fighters will even be replaced. This is great to keep the 1 player game interesting.

Cheat Menu
On the Title Screen, choose Options. Highlight Continues and hold Run and Block (C-Left and C-Down are the default buttons for Run and Block) until a special options menu appears. To exit the menu, highlight Exit and press the A Button.

 Change Fight Order
 Cheat Menu
 Play As 007
 Play As Goro
 Play As Meat
 Play As Noob Saibot
 View Ending Credits
 Kombat Codes
Play As 007
At the character select screen go down to Johnny Cage. Now hold START and press C-Up three times (his picture should flip three times revealing a yin yang sign.) When the match begins, Johnny Cage should be wearing a tuxedo. Now take out his weapon (Forward, Down, Forward, Low Kick) and it should be a gun.

Play As Goro
To play as Goro, select HIDDEN on the character select screen, then press Up, Up, Up and Left (the cursor will be on Shinok). Press Run and Block together to play as Goro.

Play As Meat
In order to play as the character MEAT you must go to "GROUP MODE" which can only be played in a two player mode. Play every character in the game (16 in all) and make sure you win every time. After you play and win with the final character you can pick anyone, your character will then be MEAT. He will have all the moves of the character you selected but he will look A LOT different!

Play As Noob Saibot
After enabling the CHEAT MENU code, go to the character selection screen and choose the "hidden" option. After activating it, go Up, then Left, then Right (which should put you on Reiko) and hold down BLOCK and RUN. This should activate Noob Saibot when the match starts.

View Ending Credits
Enter the CHEAT MENU code then turn on Endings. Start a game in 1 Player Arcade Mode. When you beat the first opponent they will fall in a vortex. Your ending will now appear.

Kombat Codes
Kombat Kodes are entered at the VS screen using a button to control each of the six boxes. (P1 and P2 refer to player 1 and player 2.)
Box1 Box2 Box3 Box4 Box5 Box6
P1 Low Punch P1 Block P1 Low Kick P2 Low Punch P2 Block P2 Low Kick

Level Select Codes
011-011   Goro's Lair
022-022   The Well
033-033   Elder Gods
044-044   Tomb Stage
055-055   Rain Stage
066-066   Snake Stage
101-101   The Dojo
202-202   Living Forest
303-303   Prison

Other Codes
001-001   Unlimited Run
002-002   Weapon Kombat
010-010   Disable Maximum Damage
012-012   Noob Saibot
020-020   Red Rain
050-050   Explosive Kombat
100-100   Throwing Disabled
110-110   Maximum Damage and Throwing Disabled
111-111   Free Weapon
123-123   No Power
222-222   Random Weapons
321-321   Big Head Mode
333-333   Randper Kombat
444-444   Armed and Dangerous
555-555   Many Weapons
666-666   Silent Kombat 
Credit Goes To: IGN 64