While playing a game, press ~ to display the console window, then type "sam_iEnableCheats=1" as a case-sensitive code to enable cheat mode. Press ~ again, then press [Esc], followed by [F1] while in the pause menu. You can now select the cheat options. You can also type "sam_iEnableCheats=2" as a case-sensitive code at the console window to enable Developer mode, or "sam_iEnableCheats=0" as a case-sensitive code to disable cheat mode.