Has this game been documented before?

[Heitorsant]

Hi everyone, I was bumbling around in google's shopping section, seeing if I could find any cool bootleg game stuff, I searched for "Sonic NES" in hopes of finding something related to Somari or something, but what I found wasn't for the NES at all, I found this game that was simply labeled "Sonic Adventure" for the Mega Drive, with a label that looked like it came straight from the nineties and I'm 90% sure it's a cartridge that exists because of the site had multiple pictures of the cartridge (images which I attached to this topic) since I'd never heard of it before, I tried doing a reverse image search with Google Lens and found literally nothing. It's probably a repackage of Sonic Jam 6 or some stolen Fan Hack but I thought it was interesting and since there's nothing about it anywhere online I thought i should mention it to some sort of bootleg games forum. The site selling it seems to be selling the used game only for Brazil, and while I am brazilian, I am also flat broke, if any of you are interested, here's the link of the game's listing: https://www.vozaogames.com.br/produtos/jogo-sonic-adventure-mega-drive-usado/
(btw sorry if this topic is a bit messy and yappy, it's my first post like this and i made it in a bit of a hurry after i found out about how this game is completely undocumented)

[Heitorsant]

alright, here's a small update, i've decided to try and contact the people selling this bootleg, sent them a message asking for a screenshot of the game or any sort of information, they have yet to answer me, will update y'all further!

[Heitorsant]

SORRY FOR THE LATE UPDATE!!! the seller showed a video of the game being run and.... it was just Sonic 1. Just straight up no nonsense normal Sonic 1. what a waste of a wacky cart art.... hey at least i got closure on this