Backgammon NJ app for iPhone and iPad

4.4 ( 4464 ratings )

Games Entertainment Board Dice Strategy
Developer: Jimmy Hu

4.99 USD

Current version: 6.3.8, last update: 4 years ago
First release : 01 Sep 2009
App size: 21.3 Mb

● 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.

REVIEWS

"[I] know strong bg play when I see it. This app is the strongest iPhone bg app Ive 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, www.mindgamescenter.com

"Ive played over 500 games now; Ive checked about 5% of these against World Class Desktop programs (GNU, BGBlitz); and Ive 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." -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 (https://www.njsoftware.com/note.html)
• Who wont expect to win consistently on the higher skill levels

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 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

IMPORTANT

• If an online match ends for any reason, youll receive the Elo pts you deserve. FAQ: https://gamecenter.njsoftware.com
• Contact us for help: https://contact.njsoftware.com

Pros and cons of Backgammon NJ app for iPhone and iPad

Backgammon NJ app good for

Tried a few apps and this is the best I found. Lots of options & customizations available. Good AI level. And the computer does not cheat: you can even roll a dice on the side and plug the numbers inside the game if you are not sure, thanks to the manual roll option.

I play expert mode every day. Strong play, i win only one of three games but have lots of fun and i ve learned a lot. Must have for every backgammoner.

Pretty much the app I have been looking for. Doing rather well at level MED, now using the hints to improve my playing. To all the people complaining about the dice rolls: Nothing to worry about, the web page explains that very well. You do have to understand, though, that you wont stand a chance against AI in BG :-)

WHAT DID YOU DO? Your new Update didnt migrate my game stats to the new version? ARE YOU KIDDING ME? 5000 rounds played for nothing? All my stats are gone! I hate you!

Addictive, but I like it. Sometimes I wonder if the computer gets better rolls from the dice but that adds to the challenge.

Fun game to pass the time but the program becomes very predictable. Some new computer moves shouldve created!

Some bad moments

Do not bother trying playing against the machine as it will always get 4x5 or 4x6 pretty much all the time...

Rubbish, dont bother. It gets luckiest dice every time and dont like loosing.

Developers should invest more in backgammon strategy than in dice "benevolence"... Computer gets much more favorable numbers than the "unlucky" player...

The reason for that the computer game mostly wins is simply to find in the fact that it knows not only ALL next dice coming but as well that it has a database where all moves are already stored. (like in chess games) If you play like a total idiot you can sometimes win 192 points in one game because you get the engine mixed up, but this is no fun. There is no calculative engine behind it because the moves are much too quick and much too accurate. Fazit: Who likes to get a bad time, no fun but anger, this is the right game for you then. Its the most unrealistic game app I ever saw.

I do win my fair share of games but the rolls the computer gets is just out of this world. A little too obvious that the rolls are "fixed"! Ive seen better games, not worth the money!

One more thing is AI always gets multiple doubles to end the game so you do not complete a backgammon. Cheating is brutal. AI ALWAYS gets the rolls it needs. But if u are on the bar with only one or two openings you will not get that number until the AI has all but two or three pieces left. On hundreds of games, I require over 4 rolls to get off the bar yet the AI gets on in 1.64 rolls on average. NOT right.

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