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Backgammon NJ

By Jimmy Hu

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● GAME CENTER -- Play online, chat, invite friends, auto-match with random players
{ Real-time } Play online in real-time
{ Turn-based } Play online at your own pace
● VERSATILE -- Play offline vs. computer or against another person in 2-player mode
● CUSTOMIZABLE -- More options than any other backgammon app

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

Backgammon NJ is a full-featured game which uses an advanced, neural network-based, artificial intelligence. Play against a computer AI, another person in 2-player mode on one device, or online against friends & other players. Using Tutor Mode & Hints, Backgammon NJ 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.


"[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."

"For serious backgammon players, Backgammon NJ is the way to go.", May 2012


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 will use the in-depth, technical features included in the app 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 Backgammon or Nackgammon
• 4 skill levels: Easy, Medium, Hard, Expert
• Customizable board design & checker colors
• Mersenne Twister algorithm for random number generation
• Doubling cube
• Single games or match play up to 25 points
• Crawford rule for match play
• 1-player mode vs. computer
• 2-player mode on one device
• Game Center: Play real-time or turn-based online matches with friends & other players
• Chat with your online opponent
• Online Elo & Experience leaderboards
• 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 an online match ends for any reason, you'll receive the Elo pts you deserve. FAQ:
• Online match disconnect info:
• We can't respond to reviews. Contact us directly:

What's New in Version 6.0.2

- Added "Random" and "Alternating" options to Checker Movement setting. These options will take effect each time you start a new match.
- Option to display point numbers
- Game Center: In iOS 10, invite friends to play through Contacts. More info:
- Bug fix for "Play Position with Same Rolls" option in analysis mode
- Bug fix for crash when sending match files on iOS 10

- Bug fix for checker movement direction in turn-based matches

iPhone Screenshots

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iPhone Screenshot 5

Customer Reviews

Superbly crafted game!!

Don't listen to the cheating allegations because the arguments there are flawed. The AI is programmed to make mistakes randomly, just as humans do unless you're playing on Expert where no mistakes are made. I can beat Hard mode the majority of games although occasionally I'll need to play the hint. This is not an easy game to master. Playing this app has definitely increased my level of game play. Awesome app!!

Love this App

I have played thousands of games on this app, love it for a short time killer.

I strongly suspect the AI does look ahead at my future dice rolls. I have seen it move off a covered point to cover a different point and then my dice rolls keep hitting the just covered point. There was no logical reason to move off the covered point, unless it knew I needed that point in the future.

Inauthentic play

The computer makes moves that no human player would take. Also the "hints" it offers is the same - no reasonable player would ever make those moves.

Computer also gets the perfect roll nearly every time while I get stuck with really bad ones. Especially infuriating when I ask for a hint, take the suggestion and then computer gets the exact roll to know me off.

1 star because it's a pretty looking app but just too unreal to be a legit game.

Backgammon NJ
View in iTunes
  • $4.99
  • Category: Games
  • Updated:
  • Version: 6.0.2
  • Size: 18.0 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. Power User$4.99
  2. Analysis Package$2.99
  3. Online VIP$2.99