Marvin the Martian has been up to something! He’s grown tired of being defeated by the Looney Tunes every time he tries to destroy the Earth, so he’s created a Biosphere on Mars to study them and learn what makes them tick. Designed as a sort of humane trap, the Biosphere is a series of Earthlike environments, with different “sub-spheres” providing a perfect, comfortable home customized to the needs of the particular Looney Tune placed there. Through hidden sensors and cameras, the sub-spheres provide Marvin unlimited access to information on their biology, psychology, and “something-else”-ology.

The Looney Tunes are up against a tough opponent in Enter the Biosphere, and Tweety and his friends need your help to solve the mystery of Marvin’s master plan!