R4: Ridge Racer Type 4

R4: Ridge Racer Type 4 is the fourth game in the Ridge Racer series. There are 8 tracks (with reversed variants, for a total of 16 layouts) and 321 vehicles, all of which are fictional. This version was one of the first games on the PlayStation to use Gouraud shading on the polygons, giving the game a visual depth that was previously lacking. It was also the first Ridge Racer game on the Sony system to feature a two-player split-screen mode and included two different driving models.