Well, this was a bit of a surprise. Although we enjoy the previously released Neo-Geo fighting games like Fatal Fury and Art Of Fighting, it was the King Of Fighters series that SNK was most famous for.
King Of Fighters 94 is the first instalment of this insanely long-running series and was the first to introduce the whole "three to a team" system. You pick from eight teams of three fighters and you win the match when all three of your opponents have been beaten. It's well worth a download, but be aware that the inevitable 95 and 96 are superior.