What's New

- Match files list shows player names
- Fixed bug where analysis mode errors were not normalized to doubling cube
- Added workaround to help prevent real-time match disconnections. As more players update to the new version, this workaround may have more effect. More info: http://bit.ly/1vpw553

Questions? Contact us: http://contact.njsoftware.com

App Description

● 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
● UNIVERSAL -- Supports iPad, iPhone, & iPod touch
● RETINA -- Supports high resolution Retina screens of iPad, iPhone, & iPod touch

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

Backgammon NJ HD 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 & others. Using Tutor Mode & Hints, Backgammon NJ HD 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

"[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 & friends." -Phil Simborg, Professional Backgammon Teacher & Player, www.mindgamescenter.com

"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 & has more useful functions than any other backgammon apps out there."

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

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 will use the in-depth, technical features included in the app to prove that it is honest (http://www.njsoftware.com/note.html)
• Who won't expect to win consistently on the higher skill levels

IMPORTANT

• If an online match ends for any reason, you'll receive the Elo pts you deserve. FAQ: http://gamecenter.njsoftware.com
• Online match disconnect info: http://bit.ly/1vpw553
• We can't respond to reviews. Contact us directly: http://contact.njsoftware.com

FEATURES

• 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 pts
• Crawford rule for match play
• 1-player mode vs. computer (no internet req'd)
• 2-player mode on one device (no internet req'd)
• Game Center: Play real-time or turn-based online matches with friends & other players (requires internet)
• Chat with your online opponent
• Online Elo & Experience leaderboards
• Block list for auto-match
• Tap-to-move interface
• Highlighted checker movement options
• Hint & Undo
• Learn with 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
• 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

iPhone Screenshots

(click to enlarge)

Backgammon NJ HD screenshot 1 Backgammon NJ HD screenshot 2 Backgammon NJ HD screenshot 3 Backgammon NJ HD screenshot 4 Backgammon NJ HD screenshot 5

iPad Screenshots

(click to enlarge)

Backgammon NJ HD screenshot 6 Backgammon NJ HD screenshot 7 Backgammon NJ HD screenshot 8 Backgammon NJ HD screenshot 9 Backgammon NJ HD screenshot 10

App Changes

  • March 25, 2015 New version 5.1.1
  • November 11, 2014 New version 5.0.3
  • April 25, 2014 New version 4.1.1
  • October 10, 2013 New version 4.0.1
  • January 11, 2013 Price increase: $6.99 -> $7.99
  • January 11, 2013 New version 3.0.1
  • October 08, 2011 New version 2.5.2
  • October 07, 2011 New version 2.5.1
  • June 24, 2011 New version 2.4.1

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