Excellent game. Worth every cent. For those who play on windows XP, don't start the game with the default shortcut because it's being launched through some emulator (i suppose it's good for vista or windows 7). On windows XP however it produce some visual artifacts (annoying cursor trail) and the main problem is that in the laboratory you cannot complete the quest !!! (you cannot select the letters from the blackboard). Otherwise, no problems, and a game that I recommend to all those who enjoy mystery adventures and thrillers.