Cars from the racing games Forza Motorsport, Need for Speed: Shift, Shift 2 Unleashed, Simulador Turismo Carretera, Top race 2009 Simulator, TC2000 Racing and Test Drive Unlimited were also converted into rFactor with the mod Shift Street. A large number of modifications were released, including ones that recreated seasons from Formula One, NASCAR, Ind圜ar and V8 Supercars. In addition to the stock vehicles and circuits available in rFactor, a steady stream of unofficial mods has become available. Most, if not all, inputs are able to be mapped to the players choosing. The player can jump directly from the racetrack to the control interface by pressing the escape key (ESC), or entering their pit box. This is analogous to buttons on modern racing car steering wheels and most computer wheels have buttons that can be mapped to keystrokes. The keyboard is also used for some actions, like requesting pit service and adjusting brake bias. General consensus dictates that a steering wheel will provide the best performance gameplay wise, though a joystick or even keyboard can be used. The player's car can be driven from multiple viewpoints, but the two most popular are termed the cockpit view (from the driver's eye) and swingman view (above and behind the vehicle).

RFactor has a detailed interface during offline race sessions or online games, allowing players to control the mechanical setup of their cars, chat to other players and enter the racing arena in their vehicle. The isiMotor2 engine was also used in many other simulation games, and in rFpro. 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. RFactor was developed by Image Space Incorporated (ISI), which has been developing simulators since the early 1990s for both commercial and military purposes. Released in November 2005, rFactor did not have much competition in this market, but it featured many technical advances in tire modeling, complex aerodynamics and a 15 degrees of freedom physics engine. rFactor aimed to be the most accurate race simulator of its time.

RFactor is a computer racing simulator designed with the ability to run any type of four-wheeled vehicle from street cars to open wheel cars of any era.

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