Nice! i can't even understand how you can make something like this in a short time. The atmosphere is really nice. As a side note i think little bits of challenges would be nicer like repairing the submarine without being seen or stopping the submarine when something that detects sounds get close, things like that. Game is really nice at first and i feel bad for writing this but it gets a bit boring when you get used to finding the gears. Nice game overall though keep it up :)