GNU Backgammon for Android - v0.9.1-preview
Pre-release
A faithful Android port of GNU Backgammon: it runs the actual gnubg engine, so the opponent's play, cube decisions, and analysis are gnubg's own — not a re-implementation.
What works in this preview
- Full matches against the gnubg engine, with four strength levels
- Doubling cube (offer / take / drop / redouble), decided by gnubg
- Tournament rules: Crawford, Jacoby, automatic doubles, beavers, and cube on/off
- A choice of match equity table for match-play cube decisions (Kazaross-XG2, Woolsey, Jacobs & Trice, Snowie, and more — the canonical gnubg tables)
- Live tutor analysis — gnubg's own equity evaluation of your moves as you play
- Three board/UI themes plus a System (Material You) option; settings persist across restarts
Requirements
Android 12 or newer (arm64).
Installing
Download the APK below and open it on your device. Because this is a sideloaded preview build, Android will warn about installing outside the Play Store and you may need to allow "install from unknown sources" — that's expected. This build is debug-signed; a future release may be signed with a proper release key, which would require a reinstall rather than an in-place update.
Notes
This is an early preview. The core game and engine are solid; deeper analysis features (a ranked candidate-move list, Performance Rating, position entry) and online play via FIBS are on the roadmap.
Source, license (GPL-3.0-or-later), and full provenance are in the repository.