The original Yakuza 1 and 2, though I’d recommend the Restored mods for each because the localizations (especially Y1’s dub) were notoriously awful. Hilarious at first, but that wears off fast.

When I first played the series I played the remakes first, and after going back and playing the originals I understood why so many series vets weren’t happy with the remakes. Y2 especially has some of the best feeling combat in the franchise.