Test mode:
Enter the options menu and highlight the "Done" selection. Press Left, Down, Left, Right, Down, Right, Left(2), Right(2). A "Test Mode" option will appear to confirm correct code entry.

Fight against Jade:
You must be on the square before the "?" square. Defeat your opponent using only the D-pad and LK. Jade will be the next opponent. If done correctly, you will advance to the Blue Portal to fight Jade, an enhanced version of Kitana.

Fight against Noob:
Win 25 consecutive matches in two player mode. The phrase "Incredible winning streak! A new warrior awaits you." will appear. You will advance to the Blue Portal to fight Noob, a shadow of a ninja that only uses the Spear as a special move.

Fight against Smoke:
Execute Upper Cuts on the Red Portal stage until Dan Forden appears. Quickly press Up + Start to teleport to the Blue Portal (Goro's Lair) to fight Smoke (an enhanced version of Scorpion).

Random fighter:
Hold Up and press Start at the character selection screen.

Monster programmer picture:
Enable the "Test mode" code. Every time you do an uppercut that normally causes Dan Forden to appear and say "Toasty" will instead display picture of him drawn by his 6 year old brother.

Pong mini-game:
Win 250 consecutive matches.

Fergality:
Enable the "Test mode" code and set the background to "6" and enable the "Ooh Nasty" option. Select Rayden as your character. Win the match by pressing Away(3), Block.

More time to use fatalities:
Press Up(2), Left, Up, Down + Select at the character selection screen.

Hint: Baraka: Fatality:
When the "Finish Him" or "Finish Her" message appears, take one step away from your opponent. Then, press Away, Away + Punch. Note: This combo is for a three-button controller.

Hint: Baraka: Head Slice fatality:
Note: This move requires a 6-button controller. Press Back(4), HP when close.

Hint: Baraka: Stab fatality:
Note: This move requires a 6-button controller. Press Back, Forward, Down, Forward, LP when close.

Hint: Jax: Head Pop fatality:
Note: This move requires a 6-button controller. Hold LP then press Forward(3) and release LP when close.

Hint: Jax: Arm Rip fatality:
Note: This move requires a 6-button controller. At two steps away, press BLK(4), LP.

Hint: Johnny Cage: Torso Rip fatality:
Note: This move requires a 6-button controller. Go in close and press Down(2), Forward(2), LP.

Hint: Johnny Cage: Head Pop fatality:
Note: This move requires a 6-button controller. Go in close and press Forward(2), Down, Up. (For three heads, when the screen goes dark hold Down + LP + LK).

Hint: Kitana: Fan Decapitation fatality:
Note: This move requires a 6-button controller. Stand close and press BLK(3), HK.

Hint: Kitana: Kiss Of Death fatality:
Note: This move requires a 6-button controller. Hold LK and press Forward(2), Down, Forward then release LK.

Hint: Kung Lao: Hat Slice fatality:
Note: This move requires a 6-button controller. Get five steps away and press Forward(4), LK.

Hint: Kung Lao: Head Slice fatality:
Note: This move requires a 6-button controller. Get a full screen distance and hold LP and press Back, Forward, then release LP.

Hint: Lui Kang: Cartwheel Uppercut fatality:
Note: This move requires a 6-button controller. Hold Block and rotate the D-pad in two full circles away from your opponent.

Hint: Lui Kang: Dragon fatality:
Note: This move requires a 6-button controller. Stand one step away and press Down, Forward, Back(2), HK.

Hint: Mileena: Sai Stab fatality:
Note: This move requires a 6-button controller. Go in close and press Forward, Back, Forward, LP.

Hint: Mileena: Bone Spit fatality:
Note: This move requires a 6-button controller. Hold HK for three seconds then release.

Hint: Rayden: Uppercut fatality:
Note: This move requires a 6-button controller. Hold HP for ten seconds then release when close.

Hint: Rayden: Shock fatality:
Note: This move requires a 6-button controller. Hold LK for five seconds, stand close, release LK and then repeatedly and simultaneously press BLK + LK.

Hint: Reptile: Head Eat fatality:
Note: This move requires a 6-button controller. At half screen, press Back(2), Down, LP.

Hint: Reptile: Invisible Slice fatality:
Note: This move requires a 6-button controller. Press Up(2), Down, HP to turn invisible, then press Forward(2), Down, HK

Hint: Scorpion: Toasty fatality:
From anywhere, hold BLK and press Down(2), Up(2), release BLK, and press HP.

Hint: Scorpion: Cut opponent in half:
Hold C and walk up to your opponent to cut them in half.

Hint: Scorpion: Spear Slice fatality:
Note: This move requires a 6-button controller. Hold HP, then press Down, Forward(3), then release HP when close.

Hint: Scorpion: Toasty From Sweep:
Note: This move requires a 6-button controller. Hold BLK then press Up(2), HP.

Hint: Scorpion: Toasty From Anywhere:
Note: This move requires a 6-button controller. Hold BLK, then press Down(2), Up(2), HP.

Hint: Shang Tsung: Inner Ear fatality:
Get within sweeping distance of opponent, then hold HK for three to five seconds. Release the button to execute Shang Tsung's Blow Up Fatality.

Hint: Shang Tsung: Kintaro Punch fatality:
Note: This move requires a 6-button controller. Hold Low Kick for the entire round (at least 25 seconds). When the "Finish Him" message appears, release Low Kick at a close distance.

Enable the one hit kill cheat in the test mode menu. In round two, hold HP for 30 seconds then hit the opponent while still holding the button. When the "Finish Him" message appears, move into sweep range and release HP.

Hint: Shang Tsung: Soul Steal fatality:
Note: This move requires a 6-button controller. Take a step away from your opponent when the "Finish Him" message appears. Then, hold Block and press Up, Down, Up, Low Kick.

Hint: Sub-Zero: Deep Freeze fatality:
Note: This move requires a 6-button controller. For the freeze press Forward(2), Down, HK. For the punch press Forward, Down, Forward(2), HP.

Hint: Sub-Zero: Ice Ball fatality:
Note: This move requires a 6-button controller. Go a full screen distance then hold LP and press Back(2), Down, Forward then release LP.

Hint: Male ninjas: Stage fatality:
When in close, press Down, Forward(2), BLK.

Hint: Dead Pool fatality:
This fatality works for every selectable character in the game. It will only work on the Dead Pool stage. However, it works differently depending on the type of controller you are using. When using the standard controller, hold B + C, get close to your opponent, hold Down, then press A. When using the six-button controller, hold A + C, get close to your opponent, hold Down, then press X. Either way, your opponent will be knocked into the acid in the background and will float off of the screen as a skeleton.

Hint: Fall off spikes:
Uppercut opponents onto spikes under BG 2, then hold Down + LP. They will fall off of the spikes.

Hint: Ignored by CPU opponents:
When fighting against the CPU, jump and kick your opponent from a good distance away. Now, while your opponent is getting up, go back a few steps, then jump and kick your opponent again. For some reason, the CPU will not move or block, and will allow you to continue doing this. This is especially useful against cheap fighters like Baraka, Liu Kang, and Mileena.

Glitch: The Spoiled Man:
Use the following trick to turn Shao Kahn into "The Spoiled Man". Enable the "Test mode" code, check off "No damage to player one", and select "Done". Fight to the finish with any character until you reach Shao Kahn. Defeat Shao Kahn in the first two matches. The game will tell you about the character used to defeat him. Then Shao Kahn will be a spoiled man and want another match. Hit him once, and he will stand there, acting as if he is going to blow up. Stand there until time is up. He will want another match. Defeat him in round five. Once you give him the last hit that kills him, the game will stop for a split second before the game over message appears.