trekawek/coffee-gb
Gameboy emulator in Java and Kotlin. observed · 2026-09-03
Health v2 · maintenance only
100/100
- Activity 100
- Release rhythm 100
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 2
- age_days: 3526
- days_rel: 2
- days_push: 0
- n_releases_24m: 30
Adoption not part of the score
1168 stars · 83 forks observed · 2026-09-03
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Coffee GB is a highly compatible Game Boy and Game Boy Color emulator for the desktop, written in Java and Kotlin. It includes a reusable emulation core plus a full desktop application with save states, rewind, rollback netplay, and broad cartridge and accessory support.
Use cases
- play gameboy games on my computer
- emulate game boy color roms on desktop
- run homebrew gameboy demos and diagnostic roms
- play link-cable gameboy games online with netplay
- use save states and rewind while playing gameboy games
- apply game genie and gameshark cheats to gameboy games
- test gameboy homebrew compatibility
When to choose
- you want a highly accurate GB/GBC emulator with strong compatibility including unusual cartridges and accessories
- you need save states, rewind, screenshots, and battery saves
- you want rollback netplay for link-cable games
- you prefer a JVM-based emulator or want to reuse the Java emulation core
When to avoid
- you need to emulate other consoles or handhelds beyond Game Boy and Game Boy Color
- you need a mobile or web-based emulator
- you want a libretro core rather than a standalone desktop application
- you need ROM files included - they are not provided
Facets
application · maturity active
game-engine simulation gui gaming-tools cross-platform developer-tools cross-platform jvm windows gameboy-emulator gameboy-color emulation-core kotlin java save-states rewind netplay super-game-boy cheats desktop macos linux
1 source
- readme: https://github.com/trekawek/coffee-gb · fetched 2026-09-03 · a6468a131527
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| trekawek/coffee-gb | main | 100 |
For agents
markdown · JSON · MCP: product_card(name="trekawek/coffee-gb")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem