ZPC Cheat Codes, Tricks

ZPC (Zero Population Count) is a first-person shooter video game which uses the Marathon 2 engine. It was developed by Zombie LLC, published by GT Interactive Software and released on October 31, 1996. It was noted for its stylized look adapted from artwork by Aidan Hughes (also credited with the game's concept).
Cheat codes, console commands, secrets:
Hold down [CTRL] or [ALT] while typing: 'TETSUO', this will make
you invincible.
Hold down [CTRL] while typing 'ACK', this will give you Oxygen.
Cheat codes, console commands, secrets and system requirements for ZPC free online.

Game description

Mac OS, Microsoft Windows
Game Developer:
Zombie LLC
Game Genre:
First-person shooter
Game Mode:
Single-player, multiplayer
Game Publisher:
GT Interactive Software