One of the most confusing "stories" for newcomers is why they can't just use any ROM with any version of MAME. Constant Evolution
Modern MAME (0.200+) is incredibly accurate, but it requires a 3GHz processor to play games that 0.72 could play on a Pentium III. For retro handhelds, Raspberry Pis, and low-power laptops, MAME 0.72 is not just a nostalgic choice; it is the only practical choice. mame 072 roms new
However, some neo-geo games (2004+) can be hacked to run on 0.72 by: One of the most confusing "stories" for newcomers
If you’re maintaining a 0.72-based emulator (e.g., RetroArch MAME 0.72 core): and low-power laptops