B-17: Fortress in the Sky is a combat flight simulator video game for the Nintendo DS. The game was released in 2007. The game takes place during World War II in the air war over Germany and the occupied territories in the autumn of 1944.
The game has separate missions. Each mission has two parts. The first part is usually fighting off attacks from other aircraft with machine guns that are placed in different locations on the plane. The second part is bombing the required targets. Each mission has specific targets that need to be bombed.