• Backgammon NJ for Android 1
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Backgammon NJ for Android

● 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.

IS THIS GAME RIGHT FOR YOU?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 (http://www.njsoftware.com/note.html)
• Who won't expect to win consistently on the higher skill levels

FEATURES
• 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

IMPORTANTIf 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: http://contact.njsoftware.com

Category : Board

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Reviews (26)

Jon. M. May 7, 2022     

I'm disappointed because this app is rather expensive and it doesn't appear to have many features. It looks like it was designed in 1997 and i find the options menu confusing and unhelpful. I paid an additional $3 for analysis but the analysis mode doesn't seem to actual offer much. I was told you could play online multiplayer on this app but i don't see that option. Overall it's just an expensive boring letdown.

Pet. T. Feb 3, 2022     

For years I played a competing backgammon game and liked it. Then they changed their bearoff algorithm and quickly it won most of the time. Backgammon NJ costs money, but it includes a rock solid AI, hints, different levels and is highly configurable. I recommend this game wholeheartedly!

Stu. t. May 16, 2022     

Completely fixed and it's so obvious. The app dev will say it's not fixed and they have proofs but all that proves is it's 100% fixed and favour is shown to computer players. This is proven by how many more doubles and doubles in a row CPU players get compared to human player. Several users have said exactly same so it's not random at all. Sorry I wasted my money and would recommend you avoid this sham of an app, it's no better than any other backgammon app except for a decent interface.

Chr. D. May 25, 2022     

6 rolls into the game 4 Doubles for AI... Fair and Random, Don't you think !!!!🖕🖕 Okay, Game -2.. 5 of the first 7 rolls for the A-I Doubles Fair and Random again 🤪😂😂 "Constant Multiple Doubles" when needed !!! Fair and Random!!! LMFAO 😂😆 How can you look in the mirror??!! Unbelievable...

Ago. T. Apr 2, 2022     

Great game,plays well I wish it had help on the doubling dice . I would recommend it to anyone who enjoys the game fun playing at different levels

Erl. R. N. Oct 17, 2018     

EDITED: Great app. The downside is the very annoying "Error - Google Play is unable to verify your license for this application. Please make sure that your device is connected to the internet, check that data is enabled, and run the application again" message. It occurs if I am offline (on a plane), and will not go away until I have connected to the net. I am not sure if it is a Goggle Play thing or the app itself, but this is the only app I have which give this error. If someone is able to give a soulution it is a five star rating.

val. m. Nov 21, 2020     

For Android there are less options than for i phone. There is no possibility to play with other people and less possibility to edit the graphic of the board. The engine is complitely unrealistic, if you put the highest level he hit you 100% of the times, and if you are winning, he double 5 times in a row. In real life thats not a topic. They should erase these issues.

Isk. z. Apr 24, 2022     

The hard setting only gives the computer an unfair advantage of knocking off open pieces 90% of the time, rolling doubles or the exact needed roll for the computer when most advantageous. Results in a frustrating experience most of the time that has nothing to do with skill. Have Uninstaller.

Adl. J. Jul 9, 2020     

It's a streamlined backgammon app with a solid export and analysis feature. There are no ads or annoying bells and whistles. The AI obviously doesn't cheat, you can set the random seed and or play in analysis mode etc etc. The other commenters are idiots l. I wish Jimmy would work to bring back online play (I know Google took down their API...) and I think the analysis mode could be better, with a ranked list of move options explaining the impact on both win and gammon percentages.

nim. Dec 31, 2021     

I love this game! Miss an option to replay the exact dice rolls again in a new game to see what different move choices would lead to.

Ste. J. H. Dec 4, 2020     

Truly the best Backgammon app on Android. Full featured with almost everything I want and more. If you're into analysis, the extra $3 is worth it to go back through a match, jump to mistakes with the option to play it differently from a certain point in the match. Fantastic!

Bil. M. Feb 19, 2022     

I have had this game forever. Sorry to hear the online component was dropped. I appreciate the analysis section. It's just fun and no advertising distractions.

Ami. A. Mar 25, 2021     

Great android backgammon experience. If you want to practice against a very strong AI and get feedback on the best move versus you own decision in term of equity lost it works great. Definitely throw in the extra 4 quid to analyse your previous games though. Very flexible depending on what kind of experience you are looking for. E.g one tap v 2tap checker moves, Checker tutor has a customisable threshold to alert for inaccuracies up to blunders.

Ang. H. Apr 22, 2022     

I have owned this app for years. It has become ridiculous. The algorithms are so amateurish- just not fun.

Ruf. H. Dec 6, 2018     

Been using this app for years and it's brilliant. Just recently installed the analytics upgrade and it's now even better - exactly what I've been looking for. Just one request - please provide a shortcut to "last game" analysis rather than having to go through the whole match every time.

Mic. S. Dec 6, 2021     

Good for learning. I want to be able to set the dice seed and then switch sides to see how the computer would have gone with my dice rolls. It would also be good to have the AI play itself given a dice seed. Also add a mode where both sides play the same dice roll.

Pet. B. Jun 3, 2019     

I previously reviewed this as a big improvement on others I've tried. As I have started using it more, I've realised that doesn't go nearly far enough: I find it difficult to imagine a better. I'm learning from it; I understand the game better now than I have in perhaps 50 years of playing it - badly, as I now realise. The range of options is first class and the playing quality is exceptionally good, even at the "Medium" level I'm playing at.

Eri. S. Feb 12, 2022     

This app is impressive. Great statistics and toggleable options. Highly addictive is this cruelest of games.

Fae. T. Mar 2, 2022     

Best backgammon app. I've used this since I got my first Book Color. Straightforward and no gimmicks.

Jil. L. Jan 28, 2020     

The game play is excellent. The lack of interfering ads is amazing. However, do not let the fact that you can prove that the dice do not roll to favor the computer fool you. If you play the computer, it sees the rolls in advance and then chooses who will go first based on what rolls favor who it wants to win. It can be very frustrating seeing the computer get exactly the rolls that it needs.

Mar. B. Mar 23, 2021     

First things first. It's easy to use and it plays well. It looks good and I like the statistics page. One star down as it's not cheap. Now - does it cheat? Well, in my very first game, i had two checkers left on 6 and 4, and it had two left on 4 and 2. It was the app's move. For me to win, the app had to roll a 1 or 3/2 and then I had to roll 6/4, 6/5 or 6/6 So the chances of me winning were less than 5%. It rolled 4/1. I rolled 6/4. If it cheats, it's not very good at it!

Iva. J. Jan 1, 2020     

After having this app for number of years came to realise that it's nothing like real life game and that's because the dice you get is quite unrealistic... Terribly annoying, the CPU will pull amazing stunts in the most difficult scenarios and most probably will win. I found the fairness changes quite a bit if you use a manual dice, and it's not in the favour of the app.

Alb. J. May 17, 2019     

there is no doubt that the game cheats. Even if the statistics shows "normal" numbers is definitively not the same when you a double six and take 4 pieces out or if you a double 6 when you're trying to get out of the bar at the beginning of the game. And thats what this game does combines throws and timing and gives the AI the throw it needs when it needs and gives you the same throw when it destroys your game, all of this happens while maintaing "normal" numbers so it appears "fair", IS RUBBISH

Kon. M. Jul 3, 2019     

Probably one of the better games out there but as one commenter said if you actually roll real dice you may find slightly more success against the computer on expert mode. While a computer does not "cheat" there are certain situations with the doubling cube where knowing the rolls ahead of time can give you a huge advantage. That being said there should be more board customization options available.

Tom. D. Feb 9, 2019     

best game I've found. I'm an eloquent 1500 player and find the game difficult to beat at hard level. I like that the CPU doesn't automatically rule giving g me a chance to second think my move. it makes crazy good good rolling blocks. I often fi d myself with 3 stones on the bar. it also makes match-strategic doubles.

Ste. May 13, 2020     

Cheats! Makes it's moves, the dice land on spots it blocked or force you to split pieces opening to a hit, over and over again, way too much to be true, so it knows rolls ahead much of the time. No matter how well you play or move it almost always gets rolls to hit you, almost never misses, too much to be true. Switch to manual rolls it loses it's ability to know rolls and all above cheats end. All experienced backgammon players agree it cheats, saying "the game is honest" is total B.S.!