About Nishimura (Mazin): He did work on Chaotix (32X). He said here that he wasn't officially involved with it (after having worked on Sonic Crackers), but he unofficially helped with pixel art and special stage design. Right now, Nishimura is the only known developer involved with the game that we have a quote from, and he rejected the idea that it was ever on the Saturn. Not only that, but he unequivocally rejected it. A more literal translation of his words is "There is no truth to it." Would he have been in a position to know? Most likely. He has provided a wealth of other information on the game. He was working directly with the developers in the same division. They would have been familiar with each other's projects through their monthly progress meetings attended by Sega president Nakayama. About drx's source: He was not a developer, but instead an employee at SOA, meaning he was involved with localization and production. Chaotix was a game intended for the North American market, so he would have been more involved in the design process. That means it's entirely possible he drew up a detailed proposal for a Saturn Sonic game, sent it to Japan, and then the project got shifted to the 32X when SOA decided to focus its efforts on the 32X. In that case, the original Saturn version may have never begun development, which explains why no one knows about it. Is it possible that there were two separate projects, one for the Saturn and one for the 32X? I don't think that's likely, and it doesn't match what anyone has said (neither Nishimura nor drx's source). I also think it's very important to emphasize what a few others have said: switching a game from the Mega Drive to the 32X is not necessarily a monumental task, since they share some of the same hardware. However, switching a game from a Mega Drive game to a Saturn game and then to a 32X game is massive, especially at the time. It just seems far-fetched to think it could have happened in the span of a few months.