Metal Slug — 6 Mame 0139u1 Link
If you are setting this up on MAME 0.139u1, here are the critical steps to ensure a crash-free experience:
(Marco, Tarma, Eri, and Fio) joins forces with their long-time enemies: General Morden's Rebel Army Martian forces New Recruits metal slug 6 mame 0139u1