MegaDrive, but i have no idea where it is.. :/ also had a Gamegear handheld, which was stunning at those days.. unfortunately it was quite unreliable and didn't get real old..
I still have my Megadrive and Dreamcast but they’re both boxed up in storage at the moment. Speedball 2 and Sonic were great on the Megadrive and Phantasy Star Online kept me playing for hours on the Dreamcast.
I've still got my megadrive but I haven't played on it in ages. I liked Toe jam and eorl and kid chameleon. I even got my mum playing one game called flicky.
I had a Genesis, CD, 32X, and Dreamcast, but none are connected. I still play Sonic 3 and Knuckles and some others a lot on Sonic Mega Collection/Sonic Gems Collection.