Backgammon NJ for Android

Backgammon NJ for Android

Play & learn backgammon at skill levels ranging from beginner to world-class!

Additional Informations
  • Current Version: 4.1
  • Updated: April 4, 2017
  • Requires Android: 2.3.3 and up
  • Installs: 10,000 - 50,000



● Google Play Games -- Play online in real-time, chat, invite friends, auto-match with random players
● Versatile -- Play offline vs. computer or against a friend in 2-player mode
● Customizable -- More options than any other backgammon app

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.

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 Games: 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
• Practice mode with unlimited undo (1-player vs. computer)
• 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
• 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.
• Run BGNJ from main memory, not from memory card.
• We can't respond to crash reports submitted through Android OS. Contact us directly:


1,597 total
5 1,119 
4 231 
3 86 
2 44 
1 117 

  • Backgammon NJ for Android
    A Google User Published date: May 17, 2017

    After playing for over 4 years, and after trying other backgammon apps, I feel pretty confident that this is the best. Yes there are times playing against the computer that you can tell that it is not going to let you win. Yes the rolls are random & prerolled but this is no guarantee of fairness. The game should alternate first player to be more fair. However it by far a better game and more fair than any other backgammon that I have tried. Full Review

  • Backgammon NJ for Android
    Jim Lilly Published date: November 1, 2017

    Still love the app. Still wish I could hide pip count, while still being able to see the stat in match info. Would really help in improving a weak part of my game. Best backgammon app available. Greatly improves your game and fun to play. I bought extreme gammon for my iPad and it pales in comparison - particularly in the areas of graphics and unobtrusive tips. It would be nice to be able to hide pip count with option to view it at "match info" or "hint." Edit: love it. Thanks for the quick response. Most used app (for good or bad) by far. Full Review

  • Backgammon NJ for Android
    Published date: December 2, 2017

    Needs option for RNG seed to change randomly on each throw like GNU. Because of the lack of this I find the dice generated may be favouring the AI in some way. It also should have a way of evaluating the luck for each match/game. As I often feel it's heavily loaded towards the AI. Overall I feel it's somewhat overpriced for what it is and nowhere near as good as GNU. However in saying that the AI is as good as GNU when using manual dice. I am playing both GNU and NJ on expert level. Full Review

  • Backgammon NJ for Android
    Alfie Kirkpatrick Published date: April 6, 2017

    Best backgammon game bar none. Would love to see more difficulty levels though. My ELO hovers around 1700-1725 and I find Hard level frustrating at times but Medium makes too many silly mistakes. Keep up the good work! Full Review

  • Backgammon NJ for Android
    Published date: October 4, 2017

    Frankly it seems rigged. Whenever the computer is on the bar, it "throws the correct dice to come back on even when there is only one or two points open. As soon as you leave a stone open, the computer got a it next roll, yet hitting the computer's open stones is less likely. Full Review

  • Backgammon NJ for Android
    Simon Cocking Published date: October 5, 2017

    I bought this way before I knew about xg and have considered switching, but to be honest, expert level is fantastic for a mobile app. I still use xg on my laptop. Well done to the creator. I feel a bit sorry for him (Jimmy Hu), as amateurs seem unable to grasp that this app doesn't cheat. Full Review

  • Backgammon NJ for Android
    Edwin A D Published date: February 4, 2018

    Challenging on the highest level. While it's methodology has improved my performance at the expert level, I'm entertained by the programmers comments of "honest" rolls. While they likely honest, that doesn't equate to reality. Years ago a friend and I played regularly with our own modifications of being able to move backwards in order to make the game more challenging. The rolls that seem to be honest, are far from realistic, I've never seen rolls by an opponent that would match the computer. I do like the game, though it can leave me frustrated, but I still go back to keep challenging it, and improve my performance. Full Review

  • Backgammon NJ for Android
    Raffaella Russignaga Published date: July 15, 2017

    Playing the expert level there is no chance of ever getting ahead. The roll dices for the computer are so conveniently precise. It's predictable. I have played over and over again and it's just frustrating that the computer gets the exact dice it needs to win every single time. I know what you are going to say, that it's random. But that's bollocks. I'm done! Full Review

  • Backgammon NJ for Android
    Ann T Published date: April 12, 2017

    It's pretty darn good for practicing and playing while I have down time. I would give it 5 stars for updated version..seems to be more balanced and fair. Full Review

  • Backgammon NJ for Android
    Vincent Oliver Published date: July 1, 2017

    The RNG isn't rigged, it's sooooo rigged lol. The published stats are probably fiction. It's equally hilarious the author defending it. If it were random I wouldn't be down over 5k pips in the bearoff, not would I have to watch the computer throw joker after joker after joker, nor would every timing game I try to play be disrupted. . The author's narcissism in defending this repeatedly takes away from what is otherwise an outstanding product. If you treat this as a learning tool and laugh at the computer throwing 35 to 1 shot after 35 to 1 shot, while you throw bricks for half the match, you'll be fine. After all, you'll have plenty of practice working from adverse positions with this product. If what doesn't kill you makes you stronger, your skills should improve dramatically playing this app. Full Review

  • Backgammon NJ for Android
    A Google User Published date: September 29, 2017

    The best backgammon software on Google Play. The dice are real random. It makes small mistakes in the bear off phase but this is not an concern. Congratulations for the developers! Full Review

  • Backgammon NJ for Android
    peggy oconnor Published date: April 21, 2017

    I play alot.... So the attraction is there ( Good application ). The players are mostly egotistical wish they wouldn't worry about rating so much and just Play. Higher level player's will disappear when there losing. Whatever .... grow differently and play. Just a game nothing personal. Full Review

  • Backgammon NJ for Android
    Richard Rees Jones Published date: April 26, 2017

    Great app but I find it very hard to beat even at the Easy level. I've played hundreds of games and the app wins twice as often as I do. I'm not saying the app cheats, because I'm sure it doesn't. I'm just saying I don't know how to beat it. Full Review

  • Backgammon NJ for Android
    Seth Johnson Published date: June 3, 2017

    Best Backgammon app by far. If you want to become a better player there's no substitute. Worth every penny and played daily by me. Can't recommend it enough. Full Review

  • Backgammon NJ for Android
    Nadia Kanagawa Published date: January 14, 2018

    Love this app! By far the best app for improving your skill level. Read the article the developer posted if you're worried about "cheating." Full Review

  • Backgammon NJ for Android
    Michael Cooper Gary Published date: February 5, 2018

    Great app that DOES NOT CHEAT. I found it to be fair and when I used the hints, I won about an equal amount of time as the computer on expert. One thing that would be nice is to be able to alternate colors as well as the direction that you go. I learned on an old board that came with an instruciton book. The book said the goal for the black pieces was the top right and the goal for the white was the bottom right. I can change directions but no the color of the die. I want to be black, move clockwise, and end up at the top right. Developer, is this possible? Keep up the great work. Full Review

  • Backgammon NJ for Android
    Alan Clarkson-Dodds Published date: August 15, 2017

    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. If you want to see proof of your ability to force rolls, play intentionally badly. Try to get as many of your pieces on the bar as you can, and then keep them in the opening quarter. The more you do it the more 6s and 5s you'll roll, because it's trying to help you. If you then play a couple of games as well as you can you'll be back to normal. You can tell when it switches. Try it. Having said that, it's by far the best backgammon game out there. I'd pay double what I did, happily. I'm glad it's as smart as it is because it's made me a better player. Full Review

  • Backgammon NJ for Android
    Andrew K Published date: June 15, 2017

    Best app I've used. Learned a lot and this has improved my game! I can verify that the game is honest and even when the computer gets the lucky rolls, I typically beat it! You can even use manual dice input. Awesome app if you'd like to impove! Full Review

  • Backgammon NJ for Android
    Published date: May 2, 2017

    Never, ever in real life seen so many doubles. The computer has a crafty wit at perfect bailouts. Considering roll probabilities, I think the "neural net" blah Full Review

  • Backgammon NJ for Android
    Bob Rubin Published date: August 13, 2017

    I've had this game for 6 years, first on an iPhone and now on Android. It is quick to play when you have a few minutes to kill and has sophisticated features that make it very challenging Full Review

  • Backgammon NJ for Android
    C L Published date: February 4, 2018

    I've been playing on this app for several years now. At first it thought it was the best backgammon app out there but now it's just a joke. It's crazy loaded towards the AI. Doesn't matter if you play 100% accurate. Fly shots like a mother... Hits you from the bar every time. You rarely hit it from the bar. Full Review

  • Backgammon NJ for Android
    Mike Menzel Published date: June 1, 2017

    While there is an issue with the frequency of double dice for both AI and human, this app seems to have fairer AI than the app I used before. Note that you can use manual dice here if you so choose. The higher skill level actually seems like a better player as opposed to relying on the extremely fortunate dice rolls that are the hallmark of many other apps. I wish one could customize the look of the board, but this is minor. Bottom line, this is worth paying for. Full Review

  • Backgammon NJ for Android
    Liam Weston Published date: December 23, 2017

    Brilliant backgammon game, well worth the price - especially if you pay a little extra for the analysis package. You do get what you pay for and if you are serious about improving your game I recommend purchasing this app. :-) Full Review

  • Backgammon NJ for Android
    Patrick Sawyer Published date: May 3, 2017

    Excellent neural network driven AI. Has made me a Better player. Good interface. Good app for casual backgammon players or for hardcore players looking for serious analysis and game improvement opportunities Full Review

  • Backgammon NJ for Android
    Peter Ozanne Published date: January 24, 2018

    This is an excellent app. I'm not quite an expert, so I average only 40% of 11-pt matches. I'm actually sorry for the one star reviewers, especially those who claim cheating.They are not intellectually brave enough to consider, even for a second, that their view is skewed, and that they are suffering from confirmation bias; and that their view is part of a vicious circle which prevents them ever bettering their knowledge and ability in BG beyond casual level. Let them ask any of the top 100 players in the world rankings - but even if they got a unanimous "bots don't cheat", I suspect they would STILL arrogantly persist. Well done Jimmy Hu etc for making such a strong, beautiful, well-featured app! Full Review

  • Backgammon NJ for Android
    Steve Cox Published date: May 23, 2017

    Excellent app and fab for improving game in spare moments travelling or whatever. Plays fair but hard! Remember the better player always seems to get the lucky rolls they need as they set their board up to maximise the number of great rolls available to them. That's Backgammon... Full Review

  • Backgammon NJ for Android
    Glenn Dawson Published date: April 20, 2017

    Had this on ios now 3 years on android great stuff, a well made app that has improved in the 6 years I have used it. Thank you for this app. Full Review

  • Backgammon NJ for Android
    John Roberts Published date: June 26, 2017

    Great app with good features and excellent skills. Seems there is no perfect random generator as after 127000 throws each, 4614 games and yet another auto finish, from throw 1 round while watching TV, 33 cpu to 6 player points I see bias in the dice not reflected in the collected stats. Keeping my own stats I see Cpu 2nd throw doubles are approx 400% of the player. Handy when setting up early in the game. Recording hit rate off the bar with 1st throw against a single open piece is 55% for cpu and 32% for player over about 1000 games. OCD I know but these stats have remained steady. I repeat, this is not my playing skill. It was using auto- finish or hints from the first throw. Full Review

  • Backgammon NJ for Android
    David McFarling Published date: December 29, 2017

    Computer always seems to get just the perfect roll needed. Waste of money. Full Review

  • Backgammon NJ for Android
    MCA Published date: July 23, 2017


  • Backgammon NJ for Android
    Wayne Kinsella Published date: January 12, 2018

    I cant get a connection to other players so always left playing the computer. Playing the computer is good but not like a live player Full Review

  • Backgammon NJ for Android
    Joel Moyer Published date: September 11, 2017

    Very fair AI, and game statistics are good to keep a check on how you're doing historically and also how AI is being kept honest. Full Review

  • Backgammon NJ for Android
    J Birmingham Published date: December 22, 2017

    Dice roll does not work, It's a very bias roll. This Game is Junk Full Review

  • Backgammon NJ for Android
    Jake J Published date: May 14, 2017

    Best backgammon app I've found. It is helping me take my game to the next level. Full Review

  • Backgammon NJ for Android
    graeme turner Published date: October 25, 2017

    Truly laughable dice , I think I would give up playing Backgammon altogether if my opponent rolled like this as they would be almost unbeatable. Play with manual dice & watch your game suddenly improve !! Full Review

  • Backgammon NJ for Android
    Published date: September 4, 2017

    The algorithm for the dice rolls is in favor of ai. And the way to show it in real time would be to display the dice totals for each game and the number of doubles rolled by ai and player. It needs adjustment. Respect your customers. Full Review

  • Backgammon NJ for Android
    A Google User Published date: October 4, 2017

    Until these games provide an easy to use turn by turn independent random roll generator the overwhelming impression is this is just a very good simulator. Excellent tutorial and game analysis but after paying thousands of matches it agressivly took a double at 1-0 down and redoubled up to 8 with a hopeless position no back game nothing and I rolled 1-2 six times in row while it ran home with doubles to win so I stopped playing it for five years. Coming back after giving up on XG when it slyly used 1.9 gb on my phone and became unplayable, I found NG much improved but still pretty much as I remember. My Elo on XG hit 2000 in full competition mode and over 1900 on NJ. As a programmer I know that support for independent easy to use dice is trivial and pretty much any serious player would grab it with both hands and happily pay for it so why not? Full Review

  • Backgammon NJ for Android
    A Google User Published date: August 13, 2017

    Good game, smart ai Full Review

  • Backgammon NJ for Android
    Charlie Reams Published date: April 8, 2017

    The definitive backgammon app for the serious player. Full Review

  • Backgammon NJ for Android
    Justin Arnold Published date: December 9, 2017

    Just played a game, and the computer through a double EVERY SINGLE ROLL. I got a double one, and nothing else. Yeah, random rolls, no cheating..... right. Full Review