Sonic The Hedgehog is set in a world where Dr. Robotnik has stolen all the Chaos Emeralds, leaving South Island on the brink of destruction. With the emeralds' power balance disrupted, Sonic and his trusty sidekick Tails must embark on a quest to retrieve them before it's too late.
The gameplay involves running, jumping and interacting with objects in the environment. Players can control either Sonic or Tails , switching between them during the game.
Sonic The Hedgehog was released on January 1991 for the Sega Game Gear console and marked a new era in handheld gaming with its fast-paced action and challenging platforming.