Metal Slug is an online NEO-GEO game that you can play at Emulator Online. This free Neo Geo game is the United States of America region version for the USA. It has been played 12,122 times so far and was posted on December 23, 2015. Metal Slug is a single title from the many arcade games, action games and platform games that we offer for this console. If you enjoyed playing this, then you can find similar games in the neo-geo games category. Metal Slug game is from the various retro games on the site, and there are more games like this, including Metal Slug 4, Metal Slug X and Metal Gear Solid.