This game is an improved version of Metal Slug 2, adding the new “Iron Lizard” weapon that chases enemies and the “Drop Shot” weapon whose shots bounce. It also adds many new enemies and allows players to adjust the game’s difficulty level by changing the position of bosses and other things. It includes several arranged production features such as changed backgrounds and some rearranged BGM. It’s a solidly enjoyable game-play experience that offers Metal Slug 2 fans some new discoveries if they look for differences while they play.