While newer versions like MAME4droid 2024 exist, the 0.139u1 version is widely considered the most "balanced" build for Android. It offers high compatibility for the Neo Geo hardware that powers most KOF titles without the extreme hardware requirements of later PC-based sets. Essential KOF ROM Compatibility List

To run KOF games successfully, you generally need two distinct files in your ROMs folder: The Game ROM file containing the game data (e.g., Neo-Geo BIOS : A file named neogeo.zip

: Do not unzip the ROM files; MAME4droid reads them as .zip .

You cannot play any KOF game on Mame4droid without the Neo Geo BIOS. This is the operating system for the arcade hardware.

: You need the specific zipped ROM files for the KoF versions you want (e.g., kof98.zip , kof2002.zip ). These must be from the 0.139u1 set .

The Ultimate Guide to MAME4droid (0.139u1) ROMs: Master "The King of Fighters" on Android