Backgammon NJ for Android

Backgammon NJ for Android


(4 stars)


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5,000 - 10,000 downloads

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● Google Play Game Services -- Play online in real-time, chat, invite friends, auto-match with random players

Play & learn backgammon at skill levels ranging from beginner to world-class! This app is designed for both Android phones & tablets.

Backgammon NJ for Android is a full-featured game which uses an advanced, neural network-based, artificial intelligence. Play against a computer AI, against another person in 2-player mode on one device, or online against friends & others. Using Tutor Mode & Hints, Backgammon NJ for Android can show you how to improve your game!

Discriminating players will appreciate how well the AI plays. It uses a neural network trained on millions of positions, a bearoff database, & a match equity table to achieve strong gameplay that will challenge even expert players.

(Reviews for iOS version)

"[I] know strong bg play when I see it. This app is the strongest iPhone bg app I've played with by far. It does not cheat period. ...Analyzing these matches with eXtreme Gammon confirms a world class level of play with normal luck factors. If you are losing, get over it. So would 99.9% of the other backgammon players in the world. It is just that good. Learn from it." -Richard Munitz, Giant of Backgammon, #21 world ranking in 2009

"Backgammon NJ plays at an extremely high level with an excellent interface, and I often use it to practice on my iPhone when I am traveling. I recommend it highly to my students and friends." -Phil Simborg, Professional Backgammon Teacher and Player,

"I've played over 500 games now; I've checked about 5% of these against World Class Desktop programs (GNU, BGBlitz); and I've actually used some of the competition. NJ has the best interface and has more useful functions than any other backgammon apps out there."

"As someone who has played a lot online (FIBS, Gamesgrid, and others) and live, playing this app (on its hardest setting) is like playing a master player or like playing GNU."

This game is best for people:
• Who recognize the strength of neural network backgammon bots
• Who want to improve their game by playing against a world-class level AI
• Who are willing to use in-depth, technical features included in the game to prove that it is honest (
• Who won't expect to win consistently on the higher skill levels

• Neural network-based AI
• 2 game types: Standard or Nackgammon
• 4 skill levels: Easy, Medium, Hard, Expert
• Mersenne Twister algorithm for random number generation
• Doubling cube
• Single games or match play up to 25 pts
• Crawford rule for match play
• 1-player mode vs. computer
• 2-player mode on one device
• Google Play Game Services: Play real-time online matches with friends & other players
• Chat with your online opponent
• Online Elo leaderboard
• Block list for auto-match
• User-friendly, tap-to-move interface
• Highlighted checker movement options
• Hint & Undo
• Learn with Status Meter & Tutor Mode
• Game & dice stats, including Elo rating & ER
• Match info: GnuBG ID, win chances, equity, top 10 moves, & cube decisions
• Email match files
• Manual match recording mode with unlimited undo & speed mode option
• Options to reverse board direction, resign, use one-tap moves, auto bearoff, auto finish, use Jacoby rule, & much more
• Optimized for resolutions up to 2560 x 1600
• Match analysis (in-app purchase): Analyze past match files, view moves & errors for match, step through match, jump to position, play from position, save match files permanently

If you're having issues:
• Make sure a task killer isn't killing BGNJ processes.
• Exit other apps fully to free memory.
• Run BGNJ from main memory, not from memory card.
• We can't respond to crash reports submitted through Android OS. Contact us directly:

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Recently changed in this version

- Online play now only uses Google Play Game Services Saved Games. If you didn't update to a previous 3.X version during the transition period, your online Elo may be reset to 1500.
- Fixed bug where analysis mode errors were not normalized to doubling cube.

Comments and ratings for Backgammon NJ for Android
  • (70 stars)

    by Gary Walvin on 29/03/2015

    Really nice to play. I don't understand why anyone thinks the dice are fixed. Turn on hint mode for a bit and see where you're going wrong. It's really improved my game. Changed comment: Please add a difficulty level between hard and expert.

  • (70 stars)

    by Alan Clarkson-Dodds on 27/03/2015

    I've been playing Backgammon NJ for years, on Android and IOS. It's smart and has helped me to up my game. But despite the developer's incessant "Proof here" diatribe I'm still able to predict what the computer is about to roll far far too often. I thought I would try a little experiment. I tried to play as poorly as is humanly possible, and force the computer to backgammon me over and over. It's

  • (70 stars)

    by Jasper Morello on 22/03/2015

    The best backgammon app in the market. Very good interface.

  • (70 stars)

    by Rhett Steely on 16/03/2015

    Plays great.

  • (70 stars)

    by Ehsan Y on 15/03/2015

    Best backgammon app available. Playing against the computer is very challenging and will help improve your game.

  • (70 stars)

    by Mark Blackstad on 15/03/2015

    I have watched it auto finish games and it will give itself free doubles when there is zero chance of the other player winning. I have played most of the good backgammon programs on pc and android and this cannot complete with the better pc programs but it will dust the other phone programs. And the developer apparently does not actually read these reviews as he responds same way regardless of

  • (70 stars)

    by Ron Breuer on 25/02/2015

    This game does a lot of things good. But it's still up to you to use all the features. The number one best thing NO CRY BABY'S!!.The games rolls are fair but you need to read the instructions not just play to see this.If your looking to up your game this BG game is for you.

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