I liked this a lot when it came out, but after revisiting it I've gotta say my tolerance for bad games must've been extremely high. The racing itself is extremely barebones even without comparing to other kart racers, but what really killed it for me were the platforming sections on the park.

I still love the idea of going around the amusement park unlocking things but the actual platforming is ass. It's horrible. You have almost no control over the character and it makes the simplest jumps to a new area the most frustrating thing.