I know you didn't specifically ask, but I was thinking about inexpensive Turbografx games and one game that should be at the top of almost everyone's list is Ninja Spirit. They must've produced a lot of this game because its price has remained very low over the years, but it's a remarkable arcade-port ninja platformer.

The visuals, music and controls, while not arcade-perfect, are about as good as you can ask for with the TG16. I usually end up playing through it about once a year; it's short but sweet.