Eclipse vs RustBoyAdvance-NG

Eclipse is a web-based emulator for playing games from classic systems: Game Boy, Game Boy Color, Game Boy Advance, NES, SNES, Sega Master System, and Sega Game Gear. It is available on Android, iOS, and web, with a free plan. Games can be added from Google Drive, Dropbox, or the Homebrew selection, or loaded from local files. The interface supports touch, keyboard, and controllers, with editable default bindings; controller compatibility depends on the JavaScript Gamepad API and the operating system. Once the site is cached, uploaded local games can be played offline, although some features, including the Library, are disabled. Save behavior differs by system: NES games do not save, SNES and GB/GBC games should save, and GBA games have some incompatibilities. The GBA core lacks Real Time Clock support, and most GBA games with auto-save functionality are unsupported. Eclipse has no multiplayer features, including Pokémon trading. User data is stored locally on the device.

RustBoyAdvance-NG is a free Nintendo Game Boy Advance emulator and debugger written in Rust. Its WebAssembly demo accepts ROM files by drag and drop, while the desktop emulator loads ROM files or ZIP archives containing .gba files. Desktop use requires a GBA BIOS binary; the project says an open-source BIOS is supported. The repository lists SDL2 and minifb desktop frontends, with minifb marked as unmaintained, plus Java JNI bindings and a terminal frontend. A proof-of-concept Android application can be opened in Android Studio and requires Rust Android targets with the NDK. The custom debugger and experimental GDB server are gated behind build features. Desktop key commands include saving and loading snapshot files, but controls cannot currently be reconfigured. Desktop builds require Rust 1.51 or later and SDL2 dependencies on Linux and macOS. The project identifies CGB audio, including four wave-generator channels, as remaining emulation work. It is distributed under the MIT License and lists Linux, macOS, Windows, web, and Android platforms.