The PlayStation port introduces some extra features: there is a combat school where the player may fight with other players for the best time on each level and an art gallery. In the end of each level the player goes up against one gigantic boss.
Every level consists of running forward blasting anything that moves, while collecting power-ups along the way (there's also a wide selection of weaponry in the game).
The player(s) takes the role of a soldier (or two) and fights a gigantic army. Metal Slug, originally released on the Neo Geo, is a side-scrolling shoot'em'up. Android, Antstream, Blacknut, Gloud, iPad, iPhone, Linux, Macintosh, Neo Geo, Neo Geo CD, Nintendo Switch, PlayStation, PlayStation 3, PlayStation 4, PSP, PS Vita, SEGA Saturn, Wii, Windows, Windows Apps, Xbox One