JustGBA

Standalone gpSP-based GBA emulator for Android (arm64-v8a). Built to be efficient, fast, and minimal.

JustGBA leverages gpSP's JIT compiler to achieve exceptional execution speed and very low power consumption, even when fast-forwarding. This makes it well-suited for mobile scenarios where efficiency is paramount.

See Benchmarks for a comparison of emulators on performance and power draw.

Features

• Fast Forwarding (1.25x, 1.5x, 2x, up to 8x and Max)
• Optional Fast Forward toggle and press to Fast Forward buttons
• Automatic save state restoration
• Save (.sav) exporting and importing
• Portrait/Landscape mode
• Recently played library in main menu
• FPS Counter

TODO

• Rebinding inputs
• Verify support for other controllers

Build

./build.sh

Requires Android SDK, NDK 26.1.10909125. Output: JustGBA.apk.

License

JustGBA is and will always be completely free and open-source software, under the GPL v2 license (inheriting from gpSP).