This Sonic game is certainly easier in comparison to the Game Gear version. A wider screen will make things easier when Sonic is fighting the many bosses of this game, but now onto this version, a game which is a significant upgrade in terms of features, enemies, collectibles and level routes than its predecessor, Sonic 1. This time, Sonic has a new mission. In addition to trying to stop Dr Eggman's world domination plots, the mad scientist has kidnapped his best friend Tails, so Sonic must try to follow Eggman, freeing all the trapped animals whilst trying to save his young fox friend. Sonic must also try to collect chaos emeralds if he is to complete the full game, which will lead to a final showdown with Eggman. Victorious, Sonic and Tails will be re-united. Sonic's appearance is largely unchanged from Sonic 1, but Eggman appears much shorter than in the first game. Also, instead of fighting Eggman at the end of every act, Sonic will encounter robotic animal bosses that will have different skills and ideas on how to defeat him. Silver Sonic (not to be confused with Silver the Hedgehog) will be one of the bosses, and possesses skills similar to those of Sonic. He also holds the last chaos emerald required to unlock the final act, though if all the chaos emeralds are not collected prior to him being defeated by Sonic, he won't release it, and the game will end there. Overall, this game is a good one for all SMS players, providing challenging acts and bosses and highlighting the special relationship between Sonic and Tails.