|ESRB PEGI CERO USK ACB|
Like the game it succeeded, the game became one of Sega's most comercially successful products and sold over six million copies, shooting the game up to Sega Genesis' second best-selling game, after the original Sonic the Hedgehog. Due both games' extreme popularity, both have had multiple versions and ports, and were released as downloadable content on the Wii's Virtual Console service. The game was also released as a port more recently on the 3DS's eShop service in the form of 3D Sonic the Hedgehog 2.
The game follows a similar storyline to that of the original Sonic the Hedgehog; this time however it takes place in West Side Island, an island which Sonic discovered as he sought to look for more adventures, and here he finds a fox named Tails and both immediately form a friendship.
Everything was going well for them until Sonic's arch-nemesis Dr. Robotnik had once more came up with diabolical schemes, and once again tries to fulfil his crazed dream of building a worldwide empire by once more transforming animals into robots and using the robots to create his biggest space ship yet, the Death Egg. To do this, he needed to steal the seven Chaos Emeralds of the island.
However, Sonic and Tails learn of Dr. Robotnik's plans and once more Sonic sets out on his quest to foil the evil doctor's schemes once more.