Play Sonic Thrash Online

Sonic Thrash was a Sega Genesis game, though it never saw an official release. It was developed by a small team, not by Sega themselves, and it feels like a product of that specific era of garage development and experimentation on the platform. It exists in that strange space of unfinished prototypes, a glimpse into what might have been.

You control a character that moves with a frantic, almost slippery momentum, tasked with navigating obstacle-heavy stages. The main objective is simply to reach the end of each chaotic level, which involves a lot of high-speed platforming and colliding with enemies. Signature mechanics include using your own velocity to smash through barriers and a pinball-like bouncing effect when you hit certain objects or walls. The pacing is relentless, and the difficulty comes from the sheer unpredictability of the physics and the cramped, hazard-filled level design. It feels like wrestling with a machine that is only half under your command.