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Gambit Software Tools for Game Theory

Gambit is an open-source collection of tools for doing computation in game theory. With Gambit, you can build, analyze, and explore game models.

Use Gambit's graphical interface to get intuition about simple games, or the command-line tools and Python scripting API to support your world-class research and practical applications.

Gambit is fully cross-platform: Get it for Microsoft Windows, Mac OS X, or Linux.

Getting started

Gambit 15

Gambit 15 is the current stable version.

Gambit 15 documentation · Download latest (15.1.0)

Gambit 16

Gambit 16 is the current research/development version. This is targeted at researchers who want the latest features.

Gambit 16 documentation · Download latest (16.0.0)

Game Theory Explorer

For an even faster start, try the online Game Theory Explorer tool, which allows you to build and solve games interactively in your web browser.

GTE documentation · Launch in your browser

Previous versions

Previous versions of Gambit are made available to facilitate reproducing calculations done with those versions. Only very limited support of these versions is available.

Gambit 14

Gambit 14 documentation · Download Gambit 14.1.1

Gambit 13

Gambit 13 documentation · Download Gambit 13.1.2

Using and citing Gambit

Gambit is Free/Open Source software, released under the terms of the GNU General Public License.

We hope you will find Gambit useful for both teaching and research applications. If you do use Gambit in a class, or in a paper, we would like to hear about it. We are especially interested in finding out what you like about Gambit, and where you think improvements could be made.

If Gambit was useful to you in writing a scientific paper, we suggest a citation of the form:

McKelvey, Richard D., McLennan, Andrew M., and Turocy, Theodore L. (2015). Gambit: Software Tools for Game Theory, Version 15.1.0.

Replace the version number and year as appropriate if you use a different release.


The Gambit Project thanks the University of East Anglia for its current support of the project; the California Institute of Technology and the National Science Foundation for supporting the project from 1994-2001, and the 2011, 2012, and 2014 editions of the Google Summer of Code.

Get involved

As an Open Source project, Gambit relies on the contributions of volunteers. Here are some ways you can get involved:
  • The Gambit issue tracker and GTE issue tracker list requested fixes and enhancements. Issues marked "easy" are often good places to become familiar with the internals. There are usually open issues covering everything from numerical programming to graphical interface design.
  • The project ideas page suggests some larger-scale features, suitable for working on over the course of a few momths.


The director of the Gambit Project is Prof Dr Theodore Turocy.

To get the latest news on Gambit, Game Theory Explorer, and computation in game theory, like us on Facebook and follow us on Twitter (@thegambitproj).