This game goes south fast after the end of the demo - actions become repetitive, instructions become barely intelligible at times. Agree with the reviewer who noted that this game was not ready for release; it needed editing and fixing of technical glitches. Logic also falls apart - either elements you have already changed continue unchanged (a robot you sent to the WC is somehow back sipping coffee if you back out into the space he was originally located) or the logic of scenes is missing (I did not consult the map or use hints until after the demo ended). This is all too bad as the game had promise. I purchased as DD and others might as well, just be aware that the 4-5 stars apply best to the first part of the game - the rest is not so entertaining.