mGBA vs SkyEmu

mGBA is a free, open-source emulator for Game Boy Advance games, designed to run on lower-end hardware while maintaining accuracy and portability. It also emulates Game Boy and Game Boy Color; most GBA games boot, while the FAQ notes bugs in Game Boy and Game Boy Color support. Nintendo DS support is very early, limited to the medusa branch, and has poor compatibility. Desktop downloads cover Windows, macOS, Linux, and Ubuntu, with homebrew builds for Nintendo 3DS, Nintendo Switch, Wii, and PlayStation Vita. Supported GBA peripherals include rumble, rotation and tilt sensors, a solar sensor, realtime clock, partial link cable support, and BattleChip Gate. Game Boy features include rumble, tilt, realtime clock, Game Boy Printer, and partial Game Boy Camera and Super Game Boy support. The Wireless Adapter, IR Adapter, and Soul Adapter are not supported. Built-in Lua scripting can access emulator memory, registers, save states, buttons, game information, screenshots, callbacks, and frame or instruction advancement. The project began in April 2013 and uses the Mozilla Public License 2.0.

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.