It is the PlayStation sequel of Ridge Racer (the arcade sequel is Ridge Racer 2). Like the original Ridge Racer, the player races computer-controlled cars with the objective of winning a series of races, and supports Namco's NeGcon controller. Ridge Racer Revolution adds two hidden cars, and two-player support via the PlayStation Link cable, and took roughly the same time to develop as the first. The intention was to increase the depth and add features. (wikipedia.org)