Metal Slug, is a A grade arcade classic - so far it's run for about seven games starting in 1996 with a few spin off's here and there. Once in a blue moon when I pass through the arcade I usually play a round or two of this. Sure I get hammered after the first few stages to the tune of about ten bucks but hey - thats arcade gaming.
Alternately I'm no good at Metal Slug.
This one is thanks to Jo Pereira of Nerf Now.
It's sfw.
