Nicktoons Racing focuses on engaging players in go-kart racing on various Nicktoons-themed tracks, similar to the Mario Kart series. The game features a wide selection of playable characters from various Nicktoons, including characters from SpongeBob SquarePants, Rugrats, The Ren & Stimpy Show, Aaahh!!! Real Monsters, Hey Arnold!, The Angry Beavers, CatDog, and The Wild Thornberrys.
Various Nickelodeon characters each receive a letter invitation to compete in a Grand Prix for the top prize, the Krusty Krab Big Bun Award. The host of the competition, also the individual who sent the invitations, is an unknown, unseen driver of a sleek, black car with a tinted dome window simply dubbed as the Mystery Rider, which the participating racers are challenged to beat, as well as each other.
The PlayStation game was not reviewed on IGN, while the Game Boy Color version seemed mixed or negative with a 3.0/10 from IGN. The Game Boy Advance edition received an 8.0/10 on IGN.