This version of MAME4droid is based on PC MAME 0.139u1 from 2010.
This usually means you have the wrong version of the ROM for the 0.139u1 emulator. Pack Roms Mame4droid 0.139u1
By default, the emulator looks in /sdcard/MAME4droid/roms . This version of MAME4droid is based on PC MAME 0
Never download a "ROM Pack" that comes as an .apk file; legitimate ROMs should always be in .zip or .7z format. How to Install Your Rom Pack Once you have your pack, follow these steps to get playing: Never download a "ROM Pack" that comes as an
Do not unzip individual game files; MAME reads them directly from the zip.
If a game starts but errors out, you might be missing a Parent ROM . Many games are "clones" and require the main version of the game to be present in the folder as well. MAME4droid (0.139u1) - Apps on Google Play
Individual ROMs can be hit-or-miss due to missing "parent" files or BIOS requirements. A full Pack Roms MAME4droid 0.139u1 (often called a "MAME 2010 Reference Set") ensures all necessary files are included for the games to launch. Where to Find 0.139u1 Rom Packs