Speedball 2 on the Amiga...
Spent so many Nights as a teen trying to max all my players and win the league.. Brings back some fun memorys playing it again on the 360..
JESUS! That brings back memories of me and one of my all time best mates playing at at about the age of 3 with little joysticks all afternoon! Winner of the thread!

Shenmue
Shenmue II
Havnt done 2 yet but we have other contenders as this is really the pinnacle of the dreamcast gaming!
I suppose my suggestion is pokemon as there has never been a game that has eaten so much of my time for so many years (the day if first got my student loan in first year i rushed out to get a ds and diamond to play it with a new mate). Of course I give credit to the old 64 games I had and the mega drive ones, but pokemon had just that charm over the world...
