Pokemon Red/Blue/Yellow for the win. It for many was THE gameboy color game, such an awesome game. The thought of trading characters with friends and doing legit pokebattles with the same friends was so amazing at the time, nearly unthinkable. Back in the day when Psychic types were broken, Mewtwo was the only "legendary", messing around with Missing Number or the Kangaskhan it evolved into, and all the endless fake ways to obtain a Mew. I voted for Pokemon Red/Blue/Yellow because I'd rather relive many fond memories of 1998-2000 with it than play Theme Park, which I didn't really care for anyway. Seriously, there's no reason Pokemon shouldn't win this round. What very few things were wrong with Red/Blue were fixed in Yellow, making the trilogy almost flawless.