Try to use sources that offer ROMs legally. For instance, some classic arcade games are made available through official channels on various platforms.
Every version of MAME (e.g., 0.139, 0.261) expects a specific ROM set. If the version numbers don't match, many games will fail to load. Merged vs. Non-Merged: mame roms pack high quality full zip android
: Smallest file size, but you must keep the "parent" game ZIP in the same folder as the "clone" for it to work. Where to Find Full ROM Packs Try to use sources that offer ROMs legally