• Great Planes® RealFlight® G4™ or RealFlight G4.5™ R/C Flight Simulator
• DVD Drive

For RealFlight G4 owners
• Windows®* XP or Vista™
• 3 GB Hard Drive Space

For RealFlight G4.5 owners
• 1 GB Hard Drive Space For Optimum Performance
• Dual Core 2.4GHz CPU
• 2 GB RAM
• 3D Accelerated Video with 512 MB dedicated video memory (Pixel Shader 3.0 support)

* Local administration access required.

Expansion Pack 6 is compatible only with Great Planes RealFlight G4 or later versions.