About 4000 years ago, a weapon named Gizoid was developed by an ancient civilization. After being lost for centuries, Gizoid was found and investigated by Professor Gerald Robotnik and his grandson, Dr. Eggman. However, they couldn't make it work, and so it was abandoned on Emerald Beach. Now Sonic the Hedgehog has found it - time to protect Gizoid!
this is a golden game