Play Metal Slug 4 emulator game online in the highest quality available. Metal Slug 4 is a SNK Neo Geo game that you can enjoy on Play Emulator. This NEO-GEO game is the US English version that works in all modern web browsers without downloading. Metal Slug 4 is part of the Arcade Games, Action Games, and Platform Games you can play here. PlayEmulator has many online retro games available including related games like Metal Slug, Metal Gear, and Metal Sonic Rebooted.