Board Thread:IRL - In Real Life/@comment-5903569-20130217210540

We all know Street Fighter II helped popularize and inspire the fighting game scene, but the first fighting game ever was Yie Ar Kung Fu by Konami (I've played it and it was pretty cool). Now, when we look at fighting games, we think about how they evolve from 1985 to now and how far fighting games in general have come. So I ask: what is, in your opinion, the greatest achievement in fighting game history? 