Many games (like Neo-Geo titles) require additional BIOS files (e.g., neogeo.zip ) to be present in the same folder as the game ROMs to function. How to Install ROM Packs
You must use ROMs specifically labeled for version 0.139u1 . The Format: Games are stored in .zip or .7z files. Pack Roms Mame4droid 0.139u1
: Some advanced 90s games require large CHD (Compressed Hunks of Data) files in addition to the standard ROM zip to run. Key Emulator Features Many games (like Neo-Geo titles) require additional BIOS