Ridge Racer is plain portable fun. It shows what the PSP can do.
This game has some of the best graphics ever seen on a handheld system ever. The graphics convey a great deal of speed.
RR is known for its over the top drifting. Hate it or love it, you can drift almost a total 90 degrees, and not loose speed. Some hardcore race fans might hate it, but it works.
You can unlock a lot of cars and tracks that span 6 different RR games. Even with all that stuffed into it, it still doesnt feel like a new game. The only new feature is using nitrous.
The game also has a lot of J-Pop songs. Some might find it annoying. The annoucer is also very annoying.
All in all, if you have a PSP, you should get this game. It's a good game to kill time when your on the road.