I was at a friends house tonight and he had an opened (cleaning it I guess?) copy of Sonic the Hedgehog that was rather strange. It had the Japanese MD cover on it, and the notch in the side BUT it fits in a Genesis. I thought this was strange because the PAL games I have don't use the notch on the side and IIRC Japanese games are wider and don't fit in a Genesis. Anyway to make things stranger the PCB had no DIP chips on it but rather one glob top. Seriously a glob top? I can't imagine any Genesis games using this!
Whats up with this one?

