This is basically the same as the main version except this only contains the 64bit version. There is no real need to use this version over the main RetroArch version here. But it's an option anyway. RetroArch is an open-source project that makes use of a powerful development interface called Libretro.
Libretro created the app that falls into the Action Games category. The most recent update of the game was launched on Oct 2, 2020 and RetroArch64 has been installed by over 100K users. Users rated this application 3.9 on Google Play.
Take the opportunity to download the installer of RetroArch64 1.9 free of charge and check out users' reviews on Droid Informer. The app is created for Android 4.1 and above. The app is completely secure for downloading.