Sonic The Hedgehog - Green Hill Zone Marble Run SetJoin the race with the Sonic the Hedgehog ??? Green Hill Zone Marble Run Set. Build your own Sonic marble run and race the marbles! This set includes stickers to make your marble run exactly how you want it. The set is easy to assemble and great fun to play. Product features: Includes 1 x Sonic The Hedgehog Green Hill Zone Marble Run Set with marbles, metallic stickers and instructions Features a Sonic loop the loop Easy to assemble Contains 50 Pieces