Eclipse vs SkyEmu

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.

SkyEmu is a free emulator for Game Boy, Game Boy Color, Game Boy Advance, and Nintendo DS systems. It runs on Android, iOS, Linux, macOS, web, and Windows, and can load ROMs compressed in ZIP archives. Graphics options include upscaling shaders, color correction, and screen ghosting. Controls include game controllers, rumble, configurable keybinds, and mobile on-screen controls. Four persistent save-state slots include screenshot previews. A REST-like API supports asynchronous scripting and automation, and listed integrations include Retro Achievements, a RetroArch/libretro core, and Google Drive save-state sync. The web app runs locally using WebAssembly and JavaScript, keeping files on the user's machine; its service worker enables offline use on more platforms. The project describes its focus as preserving these systems for future generations while providing a good user experience. It says Game Boy Advance emulation is significantly more accurate than its Game Boy and Game Boy Color emulation. Many Nintendo DS games still have mild graphics and audio issues, and DS emulation is beta quality.