A simulator for Dominion card game strategies
JavaScript CoffeeScript CSS HTML
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testSimulation.coffee log when Minion's attack misses Jun 28, 2015



Dominiate is a Dominion simulator, in which you can program bots to follow strategies that you define and see which one wins.

It is inspired by Geronimoo's Dominion Simulator. It shares the feature that, to define many possible strategies, you may simply list cards and conditions in which to buy them in priority order.

The code is meant to be open and extensible. Many other aspects of a strategy can be overridden, including its preferences for how to play actions. If this system doesn't allow you to define the strategy you want and you're okay with writing more code, I encourage you to fork the simulator and change it so that it does.

Dominiate is written in CoffeeScript, which compiles to JavaScript. This means it can either run at the command line using node.js, or it can run natively in a Web browser!


The docs directory contains documentation in the "literate programming" style -- that is, it shows you the code in parallel with explanations of what it does.


To use the command-line version, you will need a reasonable development environment with a command line.

First, acquire node.js (v0.4 or later) and npm (the Node Package Manager). The best way to do this differs by operating system and changes a lot.

Enable CoffeeScript by running sudo npm -g install coffee-script (or whatever the equivalent is on Windows). Now node.js will understand CoffeeScript source files.

Running "./play.coffee bot1 bot2" will load the bots with the specified names and play them against each other. For example:

./play.coffee strategies/BigMoney.coffee strategies/ChapelWitch.coffee

Building the Web app

The Web version of Dominiate is built using CoffeeScript and Less CSS.

On a reasonable UNIX computer (including Linux and Mac OS): Follow the instructions above to set up CoffeeScript. You should also install Less CSS with sudo npm -g install less.

Then, type make to build the JavaScript and CSS files that will be used on the Web.

Do not edit the computer-written JavaScript directly! That way lies madness.

On Windows: you can now compile the CoffeeScript files on Windows, using an included CoffeeScript compiler, windows/coffee.exe. (Being an .exe file downloaded from the Internet, you of course run this at your own risk.)

Running windows/compile.bat should do the Right Thing, but I haven't tested it. See windows/README for more information.

Genetic algorithm version

Dr. Mitchell Morris is working on an exciting version of Dominiate that can evolve new strategies using genetic algorithms. You can find this version at https://github.com/Narmical/dominiate.


Short-term planned features include:

  • Implement almost all the cards
  • Don't buy cards that make you instantly lose
  • Test cases, making sure the simulator keeps working in weird situations

Some specific features I hope for Dominiate to eventually have appear tagged with "feature" on the Issues list.