Metal Slug , originally released on the Neo Geo CD, is a side-scrolling action game. The player(s) takes the role of a soldier (or two) and fights against an enormous enemy army. Every level consists of running forward blasting anything that moves, while collecting power-ups along the way. In the end of each level, the player goes up against one gigantic boss.
The gameplay is fast-paced and action-packed, with a focus on shooting and exploration. The player must navigate through levels, fighting enemies and collecting power-ups to upgrade their weapons. With a wide selection of weaponry available, players can choose the best approach for each level.