Backgammon NJ for Android

In-app purchases
3.6
2.21K reviews
10K+
Downloads
Content rating
PEGI 3
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About this game

● 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 or against another person in 2-player mode on one device. 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 (https://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
• 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

IMPORTANT
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: https://contact.njsoftware.com
Updated on
Sep 1, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

3.7
1.83K reviews
Peter S
October 9, 2021
One of the best backgammon aids out there and it does not cheat! Those who claims it does are just not as good backgammon players they think they are. This program makes it very easy to check if it's cheating or not. However, it loses one star because it (again) wouldn't run when being offline. Really annoying being on a plane and not being able to play. Please fix this!
1 person found this review helpful
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Jimmy Hu
October 9, 2021
Hi Peter, this app does *not* require internet. After install, run the app with internet over a couple days to validate your license. After that, run with internet one time every couple months, & you can use it without internet for the rest of the time.
Barnsley Chop
September 28, 2024
Just such a good way to pass the time. I started out as a real beginner but now hold my own around 1600. I should really take advantage of all the features, including online playing. 4 years on. Still love this app. Only gripe is I wish it was easy - and I mean a click of a button easy - to replay the last game (or replay and switch sides). Keep up the good work!
6 people found this review helpful
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Rod H
December 10, 2024
XG gammon was the definitive choice for BG apps. But no longer works in Android, this app is an alternative. XG has better interface, and better all round. BGNJ gets the rolls it wants way too much, especially when behind. 2- 3 perfect rolls in a row to decimate you. Just jumps out from your prime with ease when it wants to. makes perfect hit & cover shots if you leave a blot- consistently Edit: can't believe it doesn't cheat. Rolls perfectly at times. Frustrating
3 people found this review helpful
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Jimmy Hu
September 2, 2024
The app is honest & has random rolls. Proofs here: https://www.njsoftware.com/note.html

What’s new

v4.8:
- Updated for latest Android API level

App support

About the developer
James Hu
3345 State St. #31067 Santa Barbara, CA 93130 United States
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