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Welcome To

DNJ Dilemma

The online game of cooperation and betrayal!


Win a LEGO MINDSTORMS robotics kit!STOP PRESS: The winner of the second round of our DNJ Dilemma competition is Manuela André of Castelo Branco in Portugal! Congratulations Manuela on your superb score of 1,315, which wins you a LEGO MINDSTORMS Robotics Invention System (RIS) 1.5!

DNJ Dilemma is an online version of Iterated Prisoner's Dilemma which has been written for us by Paul Stephens. Prisoner's Dilemma is a game which is studied by psychologists and sociologists all over the world, and is claimed by some to have been the basis of Superpower military strategy during the Cold War! It's a game of deceptive simplicity; you can learn to play it in a couple of minutes, but formulating good strategies - and deciding what your goals are - can take much longer.

DNJ Online offers you three versions of the Dilemma Game:

DNJ Dilemma Standard Edition
Play against the computer, or watch the computer plays against itself.

DNJ Dilemma Tournament Edition
Pit a computer strategy against groups of other strategies.

Enter the Matchplay competition!
See if you can get a better score than your competitors!
Hi-score table reset at the end of each month.

Alternatively, you can read about DNJ Dilemma before playing it (you can also view these pages from the Help button on the game pages), or you can find out how the game was written in our Inside DNJ Dilemma guide!

DNJ Dilemma requires Internet Explorer 4.0 or later:Download Internet Explorer

 


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Enter the Matchplay competition!

Standard Edition

Tournament Edition

 

Help Pages


The inside story: find out how DNJ Dilemma works!