Cheat  mode:  Press  ~  during game play in single player mode to
display  the console window. Then, enter one of the following codes to
activate the corresponding cheat function.

Code:                                  Result:
tank.immortal <0 or 1>                 Toggle God mode
tank.ammo <0 or 1>                     Toggle unlimited ammunition
tank.speed                             Set tank speed
tank.easydriving <0 or 1>              Toggle easy driving
steering tank.carsteering <0 or 1>     Toggle car type
tank.activate <0 or 1>                 Toggle tank debug interface
help                                   List all console commands