Sonic the Hedgehog 3 is a platform video game developed by Sega and released in 1994. It features Sonic, a blue anthropomorphic hedgehog, and his sidekick Tails, a two-tailed fox, as they attempt to stop the evil Dr. Robotnik from collecting the Chaos Emeralds and taking over the world. The game introduces new gameplay mechanics, including the ability to combine powers with Tails and the addition of elemental shields. The game is divided into several zones, each with unique themes and challenges. Players navigate through these zones, defeating enemies and collecting rings. Sonic the Hedgehog 3 is known for its vibrant graphics, catchy music, and cooperative multiplayer mode, allowing two players to team up and play together.