Nicktoons Nitro (originally titled Nicktoons Knightro) is the third racing-themed Nicktoon video game, after Nicktoons Racing and Nicktoons Winners Cup Racing. It features characters from SpongeBob SquarePants, Danny Phantom, The Adventures of Jimmy Neutron, Boy Genius, The Fairly OddParents, Invader Zim, and Avatar: The Last Airbender. The game features Mario Kart-like gameplay. It was released in August 2008 as an arcade game by developer Raw Thrills.
An average day in Bikini Bottom turns sour for SpongeBob SquarePants when he gets sucked into a mysterious portal. Several other Nicktoons are also snatched away from their own worlds and all are soon stranded in a mysterious laboratory.
Soon, they see the being responsible for their kidnapping: Lord Nitro, who desires that the Nicktoons race through his planet solely for his amusement. Given unique vehicles and sent into racetracks based on their homeworlds, the Nicktoons compete not just for victory, but to escape from their mysterious captor.
- SpongeBob is the only character voiced by his original voice actor, Tom Kenny, in this game.