If I remember correctly, this game (maybe it was the sequel or both?) had a great feature I wish other games would copy. When you finish the game and become the "Taskmaker", you unlock an ability that basically turns the entire game into the map editor. I played this a lot when I was young (there were only 4 games on mac at the time; this, Zork, Breakout and Super Breakout) and I would cop it immediately if it showed up on GOG.