Play Sonic the Hedgehog 2 (World) (Rev A) [Hack by ColinC10 v1.0] (~Robotnik's Revenge) (Boss Mode) Online

Sonic the Hedgehog 2 was originally developed by Sega and released for the Genesis in 1992. This particular version, Robotnik's Revenge (Boss Mode), is a hack by ColinC10 that reworks the game to focus entirely on boss encounters. It strips away the platforming stages, offering a condensed experience that highlights one of the game's most intense aspects.

You control Sonic, sometimes with Tails in tow, as you face off against Dr. Robotnik's mechanical creations one after another. The objective is simple: defeat each boss without getting hit too many times. You'll rely on Sonic's spin dash to damage weak points, dodge projectiles, and navigate small arenas filled with hazards. The pacing is relentless, and the difficulty is noticeably sharpened since you move directly from one boss to the next. It feels like a concentrated burst of the original game's most demanding moments.