64 Cube Backgammon
English · Français

Your table is ready.

A free backgammon home for your pocket — six hand-drawn boards, a world-class engine that lives on your phone, and a coach who explains the why behind every move.

Apps are on their way.

Cube Backgammon home screen: Play, Train and Daily Challenge cards on a warm ivory background

The coach

Grandmaster strength, gentle delivery.

The engine runs entirely on your device — no server, no waiting — and plays at the level of the strongest programs. The coach turns that strength into teaching.

  • A word at the right moment. Ask for a hint, or let the coach step in before a blunder becomes a habit.
  • Every game, debriefed. Post-game analysis walks your key decisions, shows the better play on the board, and explains the idea behind it.
  • Progress you can see. A rating built on the quality of your decisions — not just whether the dice were kind.
A live game with the coach strip offering a hint above the board
Post-game review: the story of the game and the moves worth another look
The Adventure map: a winding trail of 54 lesson stops

Adventure & puzzles

Learning that feels like playing.

No lectures. A 54-stop Adventure carries you from your first roll to real doubling-cube judgement, one bite-sized challenge at a time — and the Daily Challenge gives you a fresh position to argue with every morning.

  • Find the best move — classic positions, graded instantly, explained properly.
  • Should you double? The decision the app is named for gets its own trainer.
  • One a day keeps the blunders away. A daily position, a streak worth keeping.

The house rules

Free means free.

Every mode. Every board. No ads.

Single player against four levels of computer, private matches with friends, ranked matchmaking near your Elo — all of it free, with nothing flashing at you between rolls and no paywall waiting at the end.

Single playerPlay a friendMatchmaking0 ads

Designed like an object, not an app.

One calm palette, real typography, and a board that fits your phone edge to edge. It installs from the browser, works fully offline, and speaks both English and French — proper FFBG vocabulary included.

Mobile-firstWorks offlineEnglishFrançais

The record

Measured against the best, not marketed against it.

Dead level1,000-game head-to-head

Against GNU Backgammon at 2-ply — the engine that has defined computer play for decades — ours finished at statistical parity.

~½ secondper decision

Measured on a phone, not a server rack. The analysis is usually done before the dice have settled.

100%on-device

The neural nets live in your pocket. Nothing uploaded, nothing shared, nothing to wait for on a plane.

1,000-game head-to-head vs GNU Backgammon 1.08 at its default 2-ply: seeded shared dice, alternating seats, cubeless money play — +0.016 points per game, 95% CI [−0.068, +0.100]. Parity on checker play, verified, repeatable.

Take a seat.

The felt is brushed, the coach is patient, and the first lesson takes two minutes.

Coming soon to the App Store and Google Play.