Gearboy
Gearboy: A broad, free emulator with strong save, link-cable and debugging features. Ranked #2 of 23 in Game Boy Emulators by our editors (9.3/10); pricing: Free plan; best for maximum platform coverage and debugging tools.
At a glance
- Editor score9.3 / 10
- PricingFree plan
- Best forMaximum platform coverage and debugging tools
- Free planYes
- Paid fromNone
- Supported systemsGame Boy, Game Boy Color, Super Game Boy
- Facts checked20 Sep 2026
Where it wins
- Supports Game Boy, Color and Super Game Boy emulation
- Includes local two-instance link-cable emulation and rewind
- Adds breakpoints, disassembly, memory inspection and AI-assisted debugging
Where it doesn't
- Link-cable emulation is local two-instance rather than online play
- Its focus is limited to the Game Boy family of systems
- Advanced debugging features may exceed casual players’ needs
Our verdict on Gearboy
Gearboy is a free, open-source emulator for Game Boy, Game Boy Color and Super Game Boy software. It suits players who want broad platform access, save-state convenience and controller support, as well as technical users interested in debugging and cartridge compatibility. Standalone builds are available for Windows, macOS, Linux and BSD, with a libretro core for RetroArch and other supported platforms. An iOS app and user guide are also available in the repository.
Its feature depth goes beyond basic game playback. Gearboy supports save states with previews, rewind, battery-backed RAM saves, Game Genie and GameShark cheats, and modern game controllers. Local two-instance Game Boy link-cable emulation adds support for linked play on the same setup. For developers and researchers, the debugger includes breakpoints, disassembly and memory inspection, while an embedded MCP server provides AI-assisted debugging. These tools make Gearboy particularly suitable for examining software behavior, not just launching games.
Platform coverage is a major reason to consider it. The published platform list spans desktop, mobile, web, Raspberry Pi, tvOS, consoles, handheld systems and embedded targets, including RetroArch/libretro, PlayStation Vita, Nintendo 3DS, Nintendo Switch, Emscripten, OpenDingux, RetroFW and QNX. Choose Gearboy if maximum platform reach and technical tooling matter more than a narrow, minimalist emulator interface. Players seeking systems outside the Game Boy family, or online link-cable play, should choose a different emulator.
Gearboy pricing
Gearboy fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Supported systems | Game Boy, Game Boy Color, Super Game Boy |
| Supported platforms | Windows, macOS, Linux, BSD, RetroArch/libretro, iOS, Android, Raspberry Pi, tvOS, webOS, PlayStation Vita, PlayStation 3, Nintendo 3DS, Nintendo GameCube, Nintendo Wii, Nintendo WiiU, Nintendo Switch, Emscripten, OpenDingux, RetroFW, QNX |
| Save states | Yes |
| Link cable emulation | Yes |
| Netplay | Not verified |
| Real-time clock | Not verified |
| Controller support | Yes |
| Deployment | Desktop, Mobile |
| Platforms | Windows, macOS, Linux, iOS, Android |
| Support | Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 20 Sep 2026 |
Alternatives to Gearboy
- SameBoyAccurate, feature-rich Game Boy emulation across desktop and iOS.9.4
- BGBA free Windows emulator with hardware-accurate timing and unusually deep debugging tools.9.2
- Coffee GBA broad, open-source GB/GBC emulator with accessory support and rollback netplay.9.1
See all Gearboy alternatives →
Gearboy vs the competition
- Gearboy vs SameBoy
- Gearboy vs BGB
- Gearboy vs Coffee GB
- Gearboy vs GB Enhanced+
- Gearboy vs SkyEmu
- Gearboy vs ChillyGB
Compare Gearboy with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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