rFactor is a computer racing simulator designed with the ability to run any type of four-wheeled vehicle. Released in November 2005, it featured many technical advances in tire modeling, complex aerodynamics and a 15 degrees of freedom physics engine.
The isiMotor2 on which the game is based is a direct successor to the engine used in previous titles developed by ISI, most notably F1 Challenge ’99–’02, released through EA Sports.