Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hunt Hide Kill

Silent Hunter 3 is a great WWII sub sim. You play as a German U-Boat in the North Atlantic. You go on patrol after patrol sinking ships and convoys. There are also several aircraft that you can send to the bottom. There are some single missions as well. In the campagin, you go on patrol and earn money for your kills. The game is very hard but very challenging and rewarding.