R4: Ridge Racer Type 4 (Ridge Racer Type 4 in Europe) is a racing video game developed and published by Namco for the PlayStation. It is the fourth title in the Ridge Racer series and the last to be released for the PlayStation. It was later re-released on the PlayStation Network in 2011. It is the first Ridge Racer series game on the PlayStation to use Gouraud shading on polygons.
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