Current version: 0.2007.01.30

The current version of Gambit is 0.2007.01.30, released January 30, 2007. Visit the Download page to get the latest version.

Version 0.2007.01.30 of Gambit, Software Tools for Game Theory, is now available for download.

A primary objective of this release is to update the Gambit codebase for most currently-used versions of gcc. gcc versions 3.4.2 and greater are now believed to successfully compile Gambit, although some versions 4.0.x of gcc appear to be buggy. In addition, this version adds support for wxWidgets 2.8.

Internally, this version includes a new implementation of the quantal response equilibrium tracing methods. The version for the extensive form (agent QRE) is now reliable for large lambda, and therefore represents the first generally-available method to compute a good approximation to a sequential equilibrium in extensive games.

There exist also the usual round of bug fixes, as well as improved handling of larger games, both in the graphical interface and the underlying library.

Finally, this release marks the (re)introduction of a Python interface to the underlying library which represents and manipulates games. Since the interface is generated using the SWIG tool (http://www.swig.org), extension of this to other languages may be easy.

This version is known to build successfully on all supported platforms. Functionality on some systems running Mac OSX is still in question. Updates for OSX users will hopefully follow soon.

About Gambit

Gambit is a library of game theory software and tools for the construction and analysis of finite extensive and strategic games. Gambit is designed to be portable across platforms: it currently is known to run on Linux, FreeBSD, MacOS X, and Windows 98 and later.

Gambit provides:

A graphical user interface, based upon the wxWidgets library, providing a common interface with native look-and-feel across platforms.
A Python API for scripting applications.
A library of C++ source code for representing games, suitable for use in other applications.

To learn more, visit the Documentation page, where you'll find some tutorials on getting started with the Gambit graphical interface, and a collection of interesting example games.

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 you are citing Gambit in a paper, we suggest a citation of the form:

McKelvey, Richard D., McLennan, Andrew M., and Turocy, Theodore L. (2007)
Gambit: Software Tools for Game Theory, Version 0.2007.01.30 http://gambit.sourceforge.net.

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

We want to hear from you!

If you use Gambit in teaching or research, we'd like to hear from you and get feedback from your experiences. Information on contacting the developers can be gotten from the Support page.