Play Metal Slug: 2nd Mission online in your browser and enjoy with Emulator Games Online! Metal Slug: 2nd Mission is NGP game USA region version that you can play free on our site. This game has arcade, shooting, action, platform genres for Neo Geo Pocket console and is one of a series of platform games. If you love platform games you can also find other games on our site with Retro Games. Below you will find control for the emulator to play Metal Slug: 2nd Mission.