From the back of the US Mac edition box
The incredible official game of the epic motion picture event.
Flyboys Squadron is the MMO World War I flying game with over 10 authentic airplanes. The game's CD-ROM includes 12 single-player missions based on the movie and bonus "Easter Egg" missions.
The game also includes regular updates and new online missions and events, ranks and medals from novice aviator to squadron "Ace" commander!