From Wikipedia: Nicktoons Unite! (also known as SpongeBob SquarePants and Friends: Unite! in PAL regions) is a 2005 video game featuring characters and levels from SpongeBob SquarePants, Danny Phantom, The Fairly OddParents, and The Adventures of Jimmy Neutron: Boy Genius. In the game, the player can control four Nicktoons characters (SpongeBob SquarePants, Jimmy Neutron, Timmy Turner, and Danny Phantom) as they work together to stop an evil plan concocted by villains from each character's series.