Players may race in one of four modes: Time Trial, Quick Race, Challenge, or Multiplayer. In all of these modes, except for Challenge, the player may choose the track, their car, the weather, forward or reverse orientation, and the physics mode to race under. The modes available are: Simulation, Strict, Arcade, and Turbo Arcade. In Simulation, every car handles differently based on weight, drivetrain, horsepower, suspension setup, and other variables. Strict is a derivative of the Simulation mode, that was added in a later update that adjusts how car-scenery collisions are handled to help reduce the effectiveness of the "wall riding" technique. Arcade sacrifices realism for playability. Cars in Arcade differ less in performance than they do in Simulation or Strict. Turbo Arcade has the same physics as Arcade, but all cars much faster than normal, resulting in the least realistic method of play.