I really liked this game - clever, many hours of gameplay, sympathetic main character (even if it is a robot), smart puzzles. A couple of quibbles: there are three or four puzzles that require speed and reflexes/hand-eye coordination more than problem-solving, and these are difficult for me so I was disappointed; and I couldn't finish the game because a bug near the end prevented it from saving. (Helpful hint - try not to quit the game after you encounter the elevator!). Evcen with these hassles, though, it was excellent.