The MS/GG counterpart of Sonic 2 sees you play as Sonic and Sonic alone. You must rescue Miles 'Tails' Prower from the evil vile clutches of Burger Boy (Ahem, Robotnik ^_^) as he has kidnapped 'Tails' and still plans to rule all of the planet. As a trademark stupidity act, Eggman lost the Chaos Emeralds. You have to find these, and reach Robotnik's base. This ain't easy, especially considering the fact that to actually RESCUE 'Tails' and reach Robotnik Sonic needs to already have obtained five of the six Chaos Emeralds, as Robotnik has a special weapon which holds the last Chaos Emerald, then you have access to...The Crystal Egg.