ChillyGB
ChillyGB: A focused, free GB/GBC emulator for players and developers who want debugging depth. Ranked #7 of 23 in Game Boy Emulators by our editors (8.8/10); pricing: Free plan; best for open-source GB/GBC emulation with debugging.
At a glance
- Editor score8.8 / 10
- PricingFree plan
- Best forOpen-source GB/GBC emulation with debugging
- Free planYes
- Paid fromNone
- Supported systemsGame Boy (DMG); Game Boy Color (CGB)
- Facts checked20 Sep 2026
Where it wins
- Supports GB, GBC, multiple cartridge types and Pocket Camera
- Includes BESS-compliant save states, RTC support and cheats
- Offers browser access plus a debugger with instruction and memory views
Where it doesn't
- No emulated link-cable support
- No netplay or online multiplayer
- Focuses on Game Boy and Game Boy Color systems
Our verdict on ChillyGB
ChillyGB is a free, open-source emulator for Nintendo Game Boy (DMG) and Game Boy Color (CGB) software. Written in C, it provides native builds for Windows and Linux alongside a WebAssembly version that runs in a browser. Its audience includes players seeking a focused handheld emulator and developers who value built-in inspection tools rather than a broad multi-system application. Support covers several cartridge types, including MBC1, MBC2, MBC3, MBC5, MBC7 and Pocket Camera, with basic gamepad input and Pocket Camera support included.
The standout feature is its debugging toolkit. ChillyGB includes instruction, memory, stack and register viewers, making it more suitable for examining game behavior or developing and troubleshooting software than a minimal player-only emulator. It also combines BESS-compliant save states with real-time-clock support for MBC3 cartridges, plus GameGenie and GameShark cheats. The browser build lowers the barrier to trying the emulator, while native releases and build configuration support desktop use. The published platform details also include Nintendo Switch support.
ChillyGB is a strong fit for users who want free, open-source GB/GBC emulation with save states, cheats, cartridge coverage and debugging capabilities. It is less suitable for multiplayer-focused users: emulated link-cable support is not implemented, and netplay is not available. The project’s narrow system scope is also a defining trade-off. Choose it for focused Game Boy and Game Boy Color work across browser and desktop environments; choose an alternative if you need online play, link-cable functionality or a wider range of consoles.
ChillyGB pricing
ChillyGB fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Supported systems | Game Boy (DMG); Game Boy Color (CGB) |
| Supported platforms | WebAssembly/browser; Windows; Linux; Nintendo Switch |
| Save states | Yes |
| Link cable emulation | No |
| Netplay | No |
| Real-time clock | Yes |
| Controller support | Yes |
| Deployment | Cloud, Desktop |
| Platforms | Web, Windows, Linux |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 20 Sep 2026 |
Alternatives to ChillyGB
- SameBoyAccurate, feature-rich Game Boy emulation across desktop and iOS.9.4
- GearboyA broad, free emulator with strong save, link-cable and debugging features.9.3
- BGBA free Windows emulator with hardware-accurate timing and unusually deep debugging tools.9.2
See all ChillyGB alternatives →
ChillyGB vs the competition
- ChillyGB vs SameBoy
- ChillyGB vs Gearboy
- ChillyGB vs BGB
- ChillyGB vs Coffee GB
- ChillyGB vs GB Enhanced+
- ChillyGB vs SkyEmu
Compare ChillyGB with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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