Last known version: v1.0.1.  The game is shipped with three installation disks; a hard disk is required for playing.  You cannot use the mouse in this game.  For diagonal movement, you should use the diagonal keys on the numeric keypad (i. e. '1', '3', '7' and '9')  ESC will toggle the in-game menu; SPACE will show the contents inside your toolbox.  Saving the game will only make sense at save-points, as otherwise the game would merely be saved at the beginning of the level.
Based on 1992 Software Toolworks/Mindscape PC release. PC versions: VGA