I've had a fascination with the Supervision for a long time after seeing it briefly in catalogs in the early '90s. I think I might have seen one in actual, genuine, not-at-all-a-fever-dream life back in said '90s. I have since bought three "games" for it, but haven't found a console to use them on. I also have an emulator for the Mac called OpenEmu, and they've been promising a Supervision emulation core for a couple years now, with no results. I just can't bear to pay a ridiculous amount online for the thing knowing I won't get any real use out of it, so I've been hoping emulation would show me what I'm missing. Not much, according to reviewers on YouTube.
It looks like the same people cranked out most of the games for the system. I know Chimera was programmed in England, though. There was a bit about it in Retro Gamer Magazine. The game started out life on an 8-bit home computer, and many years later the programmer was contacted and asked to port it to the Supervision. I don't remember which magazine issue that was in, although it was probably about a year ago I read that. Maybe you can track down the article, get his info, and contact him for an interview about the game. Maybe get some 'behind the scenes' info about Supervision in the process.