The New Adventures of Sonic the Hedgehog is a fangame based on Sonic Cartoons & Archie Comics.

The Game itself takes place in a special Alternate Universe where elements of all three shows (SatAM, AoStH & Underground) co-exist in some kind of fashion. You have a choice to play through 3 zones in this demo; Peridot Coast (a beach in Mobius best known for it's unusual green sand), Marble Valley (a canyon filled with volcanic geysers) & Robotropolis (an industrial city & Primary headquarters of Bumbling villain Dr. Robotnik & his Super Sonic Search & Smash Squad!