OPERATION LAMBDA/IIgs Keys OA-M toggles game Music OA-up arrow/ OA-down arrow adjust IIgs sound volume ESC restarts Level OA-Q quits game Move using IIgs Keypad 5 does rotate (e.g. rotate mirror) SPC shoot Difficulty Easy gives twice as much time as Normal Hard gives 3/4 as much time as Normal Scores 1000 x Level (x2 if @ Hard) (/2 if @ Easy) + 100 x Seconds left for completing a Level R/