Silent Hunter 4

Silent Hunter 4: Wolves of the Pacific is a computer submarine simulation for Windows developed by Ubisoft Bucharest and published by Ubisoft in 2007. It places the player in command of a U.S. Navy submarine during World War II and takes place in the Pacific theater. The game allows players a variety of play modes including career, single war patrol and single battle engagements. An expansion pack, The U-Boat Missions, was released in 2008.