includes all necessary files for that particular ROM hack/bootleg.
: Some versions found in the 0.139u1 set are "bootlegs" that mash up assets from previous games rather than being the authentic Atomiswave port. 2. Essential BIOS Files metal slug 6 mame 0139u1 rom exclusive
For those brave enough to embark on the quest for the Metal Slug 6 MAME 0139U1 ROM, here is a basic guide: includes all necessary files for that particular ROM