Metal Slug - 1st Mission (World) (En,Ja) ROM download is available to play for Neo Geo Pocket Color. This game is the US English version at EmulatorGames.net exclusively. Download Metal Slug - 1st Mission (World) (En,Ja) ROM and use it with an emulator. Play online Neo Geo Pocket Color game on desktop PC, mobile, and tablets in maximum quality. If you enjoy this free ROM on Emulator Games then you will also like similar titles Metal Gear Solid - Peace Walker and Metal Slug XX.