Sonic the Hedgehog (Prototype)

Sonic the Hedgehog (Prototype) is a rare chance to explore Sonic’s world in an early and unfinished stage. You can get to see original concepts, rougher graphics, and level ideas that never made it into the iconic 1991 Sega Genesis game. You can play this Sonic the Hedgehog (Prototype) game on our website.

Sonic the Hedgehog (Prototype) Game Features

• Unfinished zones with unique layouts not found in the released Sonic game
• Early versions of familiar areas like Green Hill Zone with different colors and enemy placements
• Alternate sprites for Sonic, including rare running and jumping poses
• Test music tracks and sound effects that changed before launch
• Different controls and physics, so Sonic may jump and move in strange ways
• Glimpses of unused items and incomplete boss fights

How to Play

• Move with left and right arrow keys
• Jump with Z or X
• Press Enter to start or pause
• Try special inputs to explore any debug menus if available