From the back of the package:
High-speed, High-intensity, High-flying Action!
> 70 missions, set across 13 massive open stages high above war torn Europe.
> Blast scores of enemy planes, tanks and more through waves of dogfighting chaos!
> Pilot dozens of WWI aircraft, or take control of fixed gun positions!
> Discover bonus side quests to receive vehicle upgrades, power ups, rockets, and more!