Sonic 1 Tokyo Toy Show 1990 Recreation

This is a fan-made recreation of the rare Sonic 1 prototype that was first shown at the 1990 Tokyo Toy Show. Built for the SEGA Genesis by a user known as Beta Filter, this homebrew project aims to capture the look and feel of that early demo before the final game hit shelves. It's not an official release but rather a labor of love for retro enthusiasts who want to experience a piece of Sonic history that few ever saw back in the day. The game plays like a stripped-down version of the original Sonic the Hedgehog. You control Sonic through a single act of Green Hill Zone, but the level layout, enemy placement, and even some graphical elements differ from the retail version. The physics feel closer to the early prototype too, with no spin dash and slightly different momentum. Your goal is simple: reach the end of the level while collecting rings and avoiding obstacles. The experience is short but focused, giving you a direct taste of how the game looked before final polish. What makes this worth trying is its historical value. It's not a full game or a polished mod, but a faithful re-creation of a very early build. If you're curious about Sonic's evolution or just want to compare how the Tokyo Toy Show demo contrasted with what we got later, this is a neat little time capsule. It's niche, but for fans of the blue blur, it's a cool artifact to boot up and run through once or twice.