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Proto:Sonic CD (Sega CD)
This page details one or more prototype versions of Sonic CD (Sega CD).
- Warning, as there are still people fooled by this: The so-called "409 prototype" is actually a hoax created by Sonic fan scene member Nemesis.
| Prototype 510|
Dated May 10th, 1993. The earliest known build of the game.
| Prototype 712|
Dated July 12th, 1993. Nearly complete, but still unfinished in places.
Dated August 6th, 1993. A close-to-final prototype which came with cover art and was released as a demo CD in Japan. It only has Palmtree Panic playable by normal means, although the rest of the game can be played with the level select code.
Dated September 20th, 1993. A U.S. pre-release with the original Japanese/European version soundtrack. It has the addition of the updated copyright on the title screen and the level-restart code seen in the U.S. final.