No other racing game compares in my mind.
The single player mode was long enough to satisfy my RPG-length lust in a game. The racing modes are varied and all are enjoyable. The graphics are phenomenal, and the sound effects are satisfying as you slam into other cars. Many unlockables, and the game has just the right difficulty. Multiplayer is a blast, even offline with just 2 players. Not an insanely "realist" driver, as you tend to attempt to knock other vehicles off the course, but not too far out (not F-Zero). Overall, another great $20 game that regardless of the player, you will enjoy.