# GearBoy

> Gearboy is an open source Game Boy and Game Boy Color emulator written in C++, focused on accurate CPU emulation and portability. It is also a RetroArch core.

Web page: https://emulationking.com/nintendo/gbc/emulator/gearboy/
Page updated: 2026-10-04

- Developer: Ignacio Sanchez
- Source code: https://github.com/drhelius/Gearboy
- Supported systems: GBC
- Runs on: Windows, Linux

Gearboy is an open source emulator for the Game Boy and Game Boy Color written in C++. Its CPU emulation is highly accurate, including instruction timing.

Gearboy passes Blargg's "cpu_instrs.gb" and "instr_timing.gb" test ROMs. It also emulates the LCD controller, so everything is drawn to the screen as it would be on the real hardware.

Gearboy supports all common memory bank controllers and their battery-backed RAM.

Its Game Boy compatibility is very good, while its Game Boy Color emulation has historically been somewhat less accurate.

## Latest builds

Download these from the web page: https://emulationking.com/nintendo/gbc/emulator/gearboy/#download

- for Windows (ARM64): 3.8.17 (2026-10-04)
- for Windows (x64): 3.8.17 (2026-10-04)
- for Linux (Ubuntu 24.04, x64): 3.8.17 (2026-10-04)
- for macOS (Intel): 3.8.17 (2026-10-04)
- for macOS (Apple Silicon): 3.8.17 (2026-10-04)