1. Possibly the greatest 2D side-scroller of all time. Released by SNK back in 1996, the series is currently in it's fifth arcade incaranation with two other versions for the Neo Geo Pocket and one for mobile phones.
Also is being used as a theme for a series of Pachinko machines being produced by SNK.
2. The Super Vehicle 001; resembles a cartoonish mini-tank. Has the untanklike power to hop, and is armed with two mini-vulcan guns and a large caliber tank cannon, which can be armed with H.E. and Armor Piercing Rounds.
"Metal Slug > Gunstar Heroes."
"Metal Slug Attack!"