All Working Mortal Kombat Trilogy Cheats - PC

Question mark menu
Hold [Up] + [Block] + [Run] at the options screen until it shakes.

Classic characters
Highlight Jax, Kano, Kung Lao or Raiden, then press 7 or X.

Fight as Chameleon
Choose any male ninja (Reptile, Classic Sub-Zero, Rain, Human Smoke, Ermac, Noob Saibot, or Scorpion) and hold [Back] + [LP] + [HP] until the fight starts. Chameleon is a semi-clear ninja that morphs into all the other ninjas in the game. When the fight begins, your ninja will explode and change into Chameleon.

One button endings
Start the game with the mkrtilw -f_1butt command line. Then, press one of the following keys at the "Finish Him" screen.

High Punch: Brutality
Low Punch: Babality
High Kick: Fatality 1
Low Kick: Fatality 2
Block: Friendship
Run: Animality

View all command line cheats (Windows version)
Start the game with the mktrilw -povhelp command line.

Enable treasure chest (DOS version)
Start the game with the mktril.exe /treasure command line.

Kombat Codes
Throwing encouraged 010-010
No throws 100-100
No blocking 020-020
Silent Kombat 300-300
Quick uppercut recovery 788-322
50% energy for player 1 033-000
50% energy for player 2 000-033
25% energy for player 1 707-000
25% energy for player 2 000-707
Sans power 044-440
Dark fighting 688-422
Unlimited run 466-466