Shinobi III: Return of the Ninja Master came out in 1993. SEGA, in their infinite mining of the Genesis days, have decided to put the title on the App Store. We could go into greater detail of the plot or gameplay mechanics, or the fact it's basically just the ROM of the game with SEGA's stock Genesis controller overlay, but here's all you need to know:
Ninjas riding jet-powered surfboards fighting robots.
Go get it now for $2.99. If you're unsure of it, just read the above sentence and ask yourself what about that ISN'T awesome.