The Neo-Geo version of Metal Slug 3 is massive. On 0.72, users had to ensure their neogeo.zip BIOS was dated correctly. This version ran the infamous "zombie transformation" level without the slowdown found on actual hardware (a feature, not a bug, to some).
To understand the importance of version 0.72, we must look at the timeline of the MAME project. MAME launched in 1997 with a handful of games. By the time version 0.72 rolled around in late 2002 / early 2003, the project had matured significantly. mame 0.72 roms
) require an additional "samples" folder containing audio files that the original hardware could not reproduce via synthesized sound alone. BIOS Files The Neo-Geo version of Metal Slug 3 is massive