Running on MAME 0.139u1 (commonly used for MAME4droid ) is a unique case because the game originally ran on Sammy Atomiswave hardware rather than classic Neo Geo boards . ROM and Hardware Requirements
Official versions of are generally not compatible with the 0.139u1 (MAME 2010) romset . While earlier Metal Slug games (1 through 5) run on Neo Geo hardware, Metal Slug 6 was built for the Sammy Atomiswave system, which was not supported in the 0.139u1 release of MAME. Compatibility Overview metal slug 6 mame 0139u1 rom top
: Available in the RetroArch app, this is the recommended way to play the actual Atomiswave version of Metal Slug 6 on Android. Running on MAME 0