Nicktoons: Crystals of Atlantis is sequel to the 2005 Nicktoons Unite!, 2006 Nicktoons: Battle for Volcano Island, 2007 Nicktoons: Attack of the Toybots, and 2008 Nicktoons: Globs of Doom.With characters from Spongebob Squarepants, Jimmy Neutron, Danny Phantom, The Fairly OddParents, and Tak & the Power of Juju, Pokemon,Crash twinsanity, and Avatar:the last Airbender appear.And it is the fourth of the nicktoons