Play Sonic 3 Complete Online

Sonic 3 Complete is a 2020 release for the Sega Genesis, developed by the Sonic Retro community. It refines the original Sonic the Hedgehog 3 & Knuckles cartridge, a game that already stood as a high point for the platform during the 16-bit era.

You control Sonic, Tails, or Knuckles, each with unique movement abilities, as you race through vibrant stages to stop Dr. Robotnik. The game emphasizes speed and exploration, with branching paths, hidden special stages for collecting Chaos Emeralds, and shield abilities that grant temporary offensive or defensive perks. The pacing is brisk but fair, with a difficulty curve that rewards practice. It feels responsive and polished, like the game finally works exactly as intended.