|Sonic the Hedgehog CD (prototype 920)|
|Developer: SEGA, Sonic Team|
|System(s): Mega CD|
|Genre: 2D Platform|
Sonic CD Build 920 is a prototype for Mega CD which was found to be the final US version of the game but with the original soundtrack that was used in the Japanese and European versions of the game.
(from Secrets of Sonic Team)
|Sonic the Hedgehog CD Prereleases|
|510 | 712 | 806 | 920|