JSettlers2 is a web-based version of the board game Settlers of Catan written in Java. This client-server system supports multiple simultaneous games between people and/or AI bots. Originally written by Robert S Thomas as an AI dissertation (http://sourceforge.net/projects/jsettlers).

The active source code is hosted at https://github.com/jdmonin/JSettlers2 including full history; the sourceforge CVS is historical up to 2012-09-28.


  • 1 to 6 players
  • Play online, or practice against the AI

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User Reviews

  • Works great! Thanks - quite addictive. A few small bugs and improvement suggestions (for playing in practice mode against AI): - BUG: small graphic (texture) bug on hexes occasionally: no texture shown on one type of hex (e.g. wheat hexes) (occurs every ~1 in 15 games). - SUGGESTION 1.: Allow game to stop when no one can possibly win (e.g. playing to 15 V.P. with 4 players (on usual board) when no development cards are left AND/OR no settlements left to build AND/OR no roads left to build AND/OR no place to build roads or settlements - i.e. no one (AI or human) can get a winning combination of largest army /longest road /build more roads or settlements to get to 15 points). - SUGGESTION 2.: Allow more choices /functionality, e.g. to choose to disable 'special building phase' on larger (5-6 player) map. AND change AI turn duration (e.g. use a sliding scale between 'instant' to say 10 seconds for AI turns). Include different AI difficulty levels. - SUGGESTION 3.: Regarding AI choices: instead of them building up too many Resource cards if they can't build roads, settlements etc, allow them to keep buying Development cards. Also allow AI to keep playing development cards even if they already have the largest army - keep using soldiers they have in hand in this case. - SUGGESTION 4.: Reduce AI disturbance-priority. This is especially relevant at the start (when selecting the first places to build initial settlements and roads): they seem to forfeit a 'better' location for a higher human-disturbance factor. Just a few ideas - Otherwise its great, thanks for making & sharing! (system: 64-bit, Windows 10)

  • AI's Strategy the priority of player disturbance is too high. Therefore, It falls well in a situation as if three AI by Bid rigging

    1 user found this review helpful.
  • Jsettlers2 works perfectly.

    1 user found this review helpful.
  • Works perfect! Really easy to use! Good Tool, runs smoothly.

  • very good project, thanks!

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Additional Project Details

Intended Audience

End Users/Desktop

User Interface

Java AWT, Web-based

Programming Language


Database Environment