Better known today as the developer of Skyrim and Fallout, Bethesda once had a well-respected racing game franchise and were deep into development of a licensed Skip Barber Racing title that never released.
Asobo, known today as the Microsoft Flight Simulator developer, created groundbreaking technology for large scale maps that was intended to be used in a high quality rally raid title. It was never released and ended up as FUEL, a post-apocalyptic open-world racing game. What happened?
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.