http://www.netrover.com/~timt/cheats/c/castlemaster.html (Amiga Plus Extra No. 5/97, 05/1997)Start the game then press 'LEFT SHIFT', 'L' ,and press the RIGHT MOUSE BUTTON about 20 times or until you hear a funny noise. Four boxes should appear shoot either of them for unlimited lives, ten keys, end sequence or rock travel.