AirForce Delta Storm is a combat flight game that lets you choose from over 40 modern warplanes. You are given a mission to destroy one or more air or ground targets. If you accomplish these missions, you earn money which can be used to buy more planes.
However, if you fail in a mission, you lose the plane you were flying in. The only one you can't lose is the A-7 Corsair II you start with. You must then buy a new plane and make your way back to the mission location.
Travel across the world map is accomplished by spending movement points, which represent fuel. There are checkpoints with paths between them which are populated by enemies. Once you shoot them down, they stay down until you run out of movement points, at which point moving around becomes more difficult again.