To answer the poll question "Favourite exclusive Mega Drive game/series?" I'd have to choose Sonic the Hedgehog. Sonic 2 in particular. That game was amazing, massive improvement over the original. Adding the spin dash move, a pick up and play second character on-screen that really didn't matter but it kept younger brothers quiet and just being bigger overall. Where could Sonic 3 go from here?

As a guy who was brought up on mario I just can't say that sonic was the killer series on the mega drive as there was something better somewhere else. What stood out for me on that list is Toe Jam and Earl I have some great memories playing this game as a kid and the two play co-operative on that level with a screen, that splits when you both leave the visible screen was way ahead of its time. There was nothing like it at the time and for me that was the greatest mega drive experience I had.