

Surviving evidence suggests that this demo wasn't actually playable, much like subsequent autodemos of Sonic the Hedgehog 2 for Game Gear and Sonic Adventure for Dreamcast.Naka appears to be correct on this point. The demo can be seen running in two newly discovered photos of Sega's booth at the toy show, and its screening can be seen (barely) in the only publicly-known footage of the toy show that shows Sega's booth. Naka contradicts this claim, stating in a Twitter private message that the demo was indeed present at the Sega booth during TTS '90.The History of Sonic the Hedgehog (an official retrospective published by Sega in 2013) states that, while the demo did indeed appear at TTS '90, it was only shown behind closed doors to industry insiders and was not publicly shown on the convention floor.In addition, Yuji Naka (the game's lead programmer) has privately and publicly disputed two key details about this demo that are supported by the historical record: whether or not it was available to the public on the show floor, and whether or not it was playable. Info about this build has always been scarce and difficult to verify.
