The game controller can be from any console or a keyboard/mouse for computer games. It must be a cheat code. No game shark, action replay, etc. No glitches. Must be a cheat code. What ever the code would do in the game happens in real life. Only one code can be entered. After that the controller disappears. Codes that stay activated until another code is entered to deactivate it or require the game to be reset to be cleared are essentially permanent as you won't be able to either. Choosing to not enter a code is a valid option, but the controller still disappears.