Its a great game but its not the racing game to buy mainly because its not long enough.
Its a genrally good game with good graphics and easy gameplay if your looking for a challing dont buy the game.
you have 5 bosses in the game you face them in a 1 on 1 race are some hard bosses though however the rest is quite easy apart from grand prix mode wich adds to extra value to this game.
The tracks are varied but the game its self isnt too long but if you want a nice fun game buy it or if not buy a ridge racer game because this is the only racing game like this for the psp.
the sound in this game is great every thing is clear, there is nothing drasticcly bad with the graphics. Everthing apart from the length of the is good ecapt for the reptiveness of the game tarcks get reppetitive and once you finish the game its boring and eritating.
graphics: 8
sound:9
gameplay:7
tilt:7
value:5
All in all this game is good and is fun worth playing; however its probibly best to rent it.