Example: To play Neo-Geo games (like Metal Slug or King of Fighters), you must download neogeo.zip from the same Archive.org 0.139u1 pool.

ROMs must remain in their original .zip format. Do not extract them unless you are putting them into a folder with the exact same name as the zip.

: On Android 11 and later, Google's "Scoped Storage" can change where apps can read and write files. While MAME4droid (0.139u1) is an older app, it's often still compatible. After installation, it may ask for permission to access your device's storage; you must grant this.

MAME4droid (0.139u1) is a specialized arcade emulator for Android designed to run over from the specific 0.139u1 MAME version. Setting it up involves matching your ROMs exactly to this version and placing them in the correct directory on your device. 1. Acquiring the Right ROMs

Once the ROMs are moved, restart the app or press Options > Rescan ROMs .

If you need help troubleshooting specific game errors, let me know: What appears on your screen? Which game title are you trying to load? What Android version is your phone running? Share public link