Sonic the Hedgehog CD for Sega CD focuses on stage hazards, enemy placement, and momentum control. Check the build details, learn the controls, and play directly in the browser.
Sonic the Hedgehog CD (Jun 21, 1993 prototype) is an early developmental build of the iconic Sega CD platformer that offers a nostalgic glimpse into the formative stages of Sonic's time-travel adventures. This prototype features unfinished mechanics, placeholder assets, and experimental design choices that showcase the evolution of classic 16-bit Sonic gameplay.
This retro prototype offers a fascinating look at gaming history, letting you experience Sonic's development process firsthand. It's perfect for classic gaming enthusiasts who want to explore never-before-seen content and appreciate the evolution of Sega's legendary platformer.
Jump into classic Sonic action with simple controls that capture the authentic 16-bit platforming experience
This build includes unfinished levels, placeholder graphics, and experimental mechanics like altered time-travel triggers and unpolished boss fights from the development phase
No—this prototype focuses solely on Sonic's gameplay, with no confirmed support for additional characters in this early version
Players switch between eras via designated gates. Changes in the past often unlock new paths or hazards in the future, though some mechanics may be incomplete or buggy in this prototype