The NeoGeo system, developed by SNK, remains the "Rolls Royce" of arcade history. If you are looking to revisit the golden age of fighting games and side-scrollers, the paired with the Winkawaks (Kawaks) emulator is the gold standard for retro gaming on PC.
Fan-made mods, such as "Crouching Tiger Hidden Dragon" or "Magic Plus" versions of King of Fighters. NEOGEO 590 Roms Emulador Kawaks