Cheat Codes Commander Keen 1 Keep pressed the letters G O D and you'll be able to walk trough enemies and walls. With the stick you'll can jump higher.Hold down the keys at the same time. KEYS EFFECT ~~~~ ~~~~~~ C, T and SPACE Extra keycards. F1 Help F8 Something strange happens. G, O, D Enables God Mode. (You will have to enter this mode every time you enter a city). SHIFT and TAB To walk through a city.