This is Great Planes RealFlight Expansion Pack 2. With Expansion Pack 2 software — designed exclusively for RealFlight G3, G3.5, G4, G4.5, G5, G5.5 and G6 — you have 21 more reasons to fly your favorite R/C flight simulator. Explore two new 3D flying sites packed with lifelike, ever-changing detail. Survey an ancient Aqueduct. Race solo through the Obstacle Course 3, or use G3’s Multiplayer to challenge a friend. Master indoor maneuvers at the E-Fest Arena — a stunning new PhotoField environment with extraordinary definition and clarity! Expansion Pack 2 also includes 18 new photo-realistic planes and helicopters. RealPhysics™ technology duplicates the performance of their real-world counterparts. 

NOTE: Requires RealFlight G3, G3.5, G4, G4.5, G5, G5.5 or G6 software. Not compatible with Apple Mac computers. 

18 new aircraft!3 new flying sites!