One thing that SNK got right with their games, and made it infuriating for fans like me, was the graphics quality of their games. Why was this infuriating to fans like me? Because SNK was so damn intent on showcasing their graphical prowess in fighting games almost exclusively.
The Metal Slug series is one of the few non-fighting/brawling games that SNK made that escaped and began its own life. Such a great series, too bad they don't make them like this anymore. This whole 8-bit look thing took over and graphics actually went backward rather than forward in detail (especially in 2D games).