Play Sonic 3D Blast (Prototype 73) Online
This Sonic prototype feels like the devs cranked the speed too high—you’re blasting through janky polygonal levels, overshooting jumps, and spotting weird early versions of familiar zones. The rough edges make it strangely addictive.
This prototype of Sonic 3D Blast, never officially released on the Sega Genesis, gives a raw look at the game's development under Sega and Traveller's Tales. It belongs to that late Genesis period when developers were pushing the hardware into new visual styles, even if the results were sometimes unpolished.
You control Sonic through isometric stages, rescuing Flickies from Badniks and guiding them to warp rings. The game emphasizes exploration over pure speed; you navigate maze-like layouts, flip switches to open new paths, and carefully manage groups of rescued birds. The pace is deliberate, with some frustration from awkward jumps and camera angles, but there's a unique charm in seeing how the levels and mechanics evolved. It feels like uncovering a rough, alternate version of a game you thought you knew.
Download Sonic 3D Blast (Prototype 73) ROM
You can download this ROM to play Sonic 3D Blast (Prototype 73) offline using an Sega Genesis (Mega Drive) emulator (Top Emulators).
*This ROM is provided for backup and educational purposes only.
