*Press [ENTER] to bring up the chat box and enter one of the following codes. Include the asterisk. These codes can not be disabled once applied?! *CHEAT: grants unlimited health and ammo. *FPS: displays frame rate. *GHOST: engages no clipping mode. *MAXFPS: raises maximum frames per second from 30 to 60. *OTHER: turns off opponent AI. *STATE: displays AI status. *SUICIDE: kills you.