Sonic the Hedgehog 2 (8-bit)

Sonic the Hedgehog 2  was an 8-bit version of the proper Sonic the Hedgehog 2; this game was launched for both Sega Master System and Game Gear consoles, and was launched a couple of months in advance before the 16-bit Sega Genesis version was released. The game serves as a sequel to the first Sonic the Hedgehog video game and debuts Sonic's sidekick and best friend, Tails for the first time - Tails would then go on and become a significant character in the Sonic the Hedgehog series.

The game was later released in the form of Virtual Console for both Wii and 3DS consoles in 2008 and 2012 respectively, and a downloadable port based on this game was created for the 3DS' eShop service under the title 3D Sonic the Hedgehog 2.

Plot
The game features quite a similar plot to its prequel Sonic the Hedgehog, as it again takes place in South Island and once again stars Dr. Robotnik as the main antagonist, who this time is constructing a space station named the Death Egg to fulfil his evil dreams of taking over South Island and forming an empire of robots.