Welcome to Game Theory Explorer

Click on the logo to start Game Theory Explorer 2.2


This will launch Game Theory Explorer in a new browser window where you can create and solve games; right-click if you have pop-ups blocked. Please use the Chrome browser.

New release (Jun 29, 2020): Martin Antonov has developed a new version 2.2 of GTE, which replaces the old Flash version. Features and requirements:

  • animation of game tree drawing, robust undo functionality
  • game tree drawing and strategic form for 2,3,4 players (equilibrium solver still only for 2 players)
  • you need the Chrome, or possibly Safari browser; unfortunately, it does not work in Firefox
  • watch the introduction video - the main operation is to highlight nodes by e.g. dragging a rectangle around them with the pressed-key mouse, and then apply operations like creating children (‘n’ key), assigning a player (‘1’ for player 1, similarly ‘2’, or ‘0’ for chance), or creating an information set (‘i’)
  • loading of old formats not yet implemented, but you can:
  • create new game trees from scratch in no time, and store and load them in a new .gte format
  • if you have an older screen resolution like 1600 x 900, consider zooming out to e.g. 90% with CTRL-Minus (in Chrome), otherwise you may have to resize some windows
  • please write to us: gte@nash.lse.ac.uk, Antonov.Martin@gmail.com

Welcome to the homepage for Game Theory Explorer β, which is a software tool to create and analyze games as models of strategic interaction. An extensive or strategic-form game can be created and nicely displayed with a graphical user interface in a web browser. State-of-the-art algorithms then compute one or all Nash equilibria of the game.

For further information please navigate the links on the right.

Note that this is a β (“beta”) software version still under development. Please let us know of misbehaviour and bugs; write to gte@nash.lse.ac.uk

Last change: Jun 30, 2020


As an entry point to using the software we recommend the following article (click for PDF), which is also how the software should be cited:

Rahul Savani and Bernhard von Stengel (2015), Game Theory Explorer – Software for the Applied Game Theorist. Computational Management Science 12, 5-33.

Software development information

New (Angular / Phaser version): The source code is publically available under https://github.com/Martin-Antonov/GTE-ng/ (not necessarily on the master branch). It is under constant development.

Old (Flash version): The source code is publically available under https://github.com/gambitproject/gte and documented under https://github.com/gambitproject/gte/wiki/_pages.


Programming for this project was financially supported by

  • an Impact Research grant from the London School of Economics for Martin Antonov
  • two STICERD research grants from the London School of Economics, for Mark Egesdal
  • the Google Summer of Code 2011, 2012, 2014, and 2016 as part of the open-source Gambit Project, maintained by Ted Turocy.