MAME 0.139u1 offered the first authentic arcade experience for this title outside of Japan. It allowed players to experience the Weapon Stock system without buying a rare Atomiswave cartridge (which still sells for $400+ on eBay).
The pairing of Metal Slug 6 with MAME 0.139u1 became a milestone for arcade preservation. Prior to this build, the only way to play Metal Slug 6 on a PC was via the glitchy PS2 port or the DEC (Dolphin Emulator—Wait, no, that's Wii) — actually via the short-lived Metal Slug Anthology for PS2, which suffered from input lag. metal slug 6 mame 0.139u1
: Metal Slug 6 uses 5 buttons (Shoot, Jump, Grenade, Weapon Switch, and Special). You can customize your layout in the Options > Settings > Input Service Menu : To change game difficulty or region settings, press the Coin + Start MAME 0
Because online archives rot, verifying your Metal Slug 6 ROM for MAME 0.139u1 is essential. Use the tool with a datfile from progetto-SNAPS version 0.139u1. Prior to this build, the only way to
In the 0.139u1 set, you will often find a version listed as Metal Slug 6 (Metal Slug 3 bootleg) , typically with the filename mslug3b6.zip . This is a hack of Metal Slug 3 modified to resemble the sixth entry and is frequently what users are actually running on older MAME builds. How to Run Metal Slug 6 on MAME 0.139u1 Metal Slug 6
Why target 0.139u1 instead of the latest MAME?