• Flight Simulator: Microsoft® FSX (FSX SP2 recommended, Acceleration Expansion Pack* optional), FS2004
• Operating System: Windows® XP SP2 (256 MB RAM), Windows® Vista™ (512 MB RAM)
• Processor: 1.0 GHz
• Hard Drive: 15 GB (space required to install Flight Simulator)
• Available Disk Space: 300 MB (space required to install the X-15 add-on software and documentation)
• Video Card: 64 MB (128 MB or more recommended), DirectX® 9.0
• Other: Sound card and speakers, joystick, wheelmouse, Adobe® Reader® 8.0 or later

*: The current version of the X-15A-2 add-on package is not compatible with FSX Acceleration Expansion Pack. The X-15A-2 (version 1.1) will be available soon and will be compatible with FSX AEP.

NOTE: Xtreme Prototypes X-15 for Flight Simulator addons are quite complex and require more processing power and RAM than other more conventional add-on aircraft packages. Increased performance will be noticed on more powerful systems. FSX SP2 minimum system requirements recommended.

Note to Windows® Vista™ with DirectX® 10 users: DirectX® 10 Preview option box in FSX display settings must be unchecked for proper aircraft display. The current version of the software does not support certain DirectX® 10 features.