Falcon 4.0: Allied Force (F4AF) is an F-16 based combat flight simulator created by company Spectrum Holobyte and further developed by MicroProse and now by Lead Pursuit. Lead Pursuit was formed after gaining a license from Atari (who later owned the license) to continue Falcon 4.0 development. Many of its employees were members of the Falcon 4.0 modding community.
Allied Force was released on June 28, 2005, and is largely a compilation and unification of existing modifications over the original Falcon 4.0 and the official patches. Prominent members of the Falcon 4.0 modding community were hired into Lead Pursuit. Allied Force also introduced several major new features and improvements in realism and stability. In recent months the most active Falcon players have converted to the newly released Falcon BMS 4 due to it's enriched graphics, unreal realism and exceptional game play.