These new pets give your pet a virtual Mazin Hamster and unlock special surprises in Mazin Hamsterworld. Each Webkinz hamster comes with a feature code that unlocks a world in which you and your hamster can build exciting 3D mazes, play in them or share them with friends! Multiple hamsters unlock new pieces for your maze and help build it faster! Its a whole new way to play in the Webkinz World. Must have active webkinz account.