In my opinion, Pac-Man World Rally is a fun game, and is the one of the best Mario Kart clones ever made.
You have a battle mode, time races, quick races, and The Grand Prix, now in the grand prix you can unlock characters, weapons, and find short-cuts in the course. Around the course you can find pac-dots, if you get this Pac-gauge full, you can transform into the Incredible Pac-Mobile, now my only complaint is that the Pac-Mobile last to short, it only last for about 9 seconds.
The Graphics for 2006, there not that great, but since it's on the Gamecube, it's a pass, the controls are really good, instead of throwing a weapon with Y with Mario Kart Double Dash, you use L WAY better.
However i came passed a couple of bugs, 2 of which being on the same course, but they're not a big problem.
In my opinion, Pac-Man World Rally is a fun game, and is the one of the best Mario Kart clones ever made. and is worth the money