P.O.W. (NES)

How I would sum up this game:  The hidden gem of NES beat em ups.

I'd never even heard of this game.  "Shame on me" maybe, or "shame on everyone" for not making this game more popular.  You're a Nam soldier in a POW camp, and you are trying to escape.  I'm surprised this isn't a more common basis for games, as it is a relatively popular concept for a movie.  Simple gameplay, but simple in this case is better.  Kick, punch, move... that's all you have to do.  Bad guy walks up to you, you kick them until the fall down, flash, and disappear.  Collect weapons, use them.  Basic formula, almost flawlessly executed.  

Of course, the black bad guys take more kicks to kill.