NEO.emu is a powerful open-source emulator designed for Neogeo arcade and home systems, built on the foundation of Gngeo. It features a minimalist user interface that prioritizes low audio and video latency, making it suitable for a wide range of Android devices, from older models like the Xperia Play to contemporary options such as the Nvidia Shield and Pixel phones. Users can enjoy seamless gameplay with support for MAMEor newer sets, requiring the neogeo.zip file for BIOS functionality.

The emulator boasts several notable features, including configurable on-screen controls and compatibility with Bluetooth and USB gamepads, as well as keyboards that are recognized by the operating system, such as Xbox and PS4 controllers. NEO.emu does not include any ROMs, which must be provided by the user, and it supports Android's storage access framework, allowing users to open files from both internal and external storage, including SD cards and USB drives.