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EFG: Extensive Form Game Experiment Software

The Extensive Form Game (EFG) software enables the construction of a wide variety of extensive form game trees, which can then be played online by subjects for research and teaching experiments.

In this software, you can create experiments to show and to analyze behavior of subjects in sequential games using an extensive form. Sequential games consist of games in which one player moves after the other player moves. In turn, the extensive form shows a sequential game as a tree where you can see who is moving (nature, player 1 or player 2) and all the options of actions of the players with their respective payoffs. Using the EFG software, you are able to create a game tree with your specifications (who is moving; payoffs; and probabilities) and to run an experiment of your game online with students or other subjects.

Software requirements:
The EFG Software requires Java. Please visit to verify that your computer supports Java and/or to freely install Java on your computer.

Using the EFG Software

Running the EFG Software can be roughly broken into three phases: setting up an experiment, running the experiment and reviewing the results. In the links below, you can find detailed information on using the EFG software to run your experiment.

If you are new to the site, or if you are looking for information on how to run an experiment on Econport, please take a moment and read about how to use this experiment system: How to Create an Experiment on EconPort.

Setting up the Experiment: This section talks about creating and modifying a configuration, building a game tree, building a session and formatting the matches that subjects will participate in.

Running the Experiment: This section talks about setting up a server at the beginning of a session, getting subjects signed in, and monitoring the experiment as it runs.

Reviewing the Results: This section briefly explains how to access the results of your experiment directly after completing the experiment and at a later date.

Related Content

Handbook - Sequential Move Games

Handbook - The Centipede Game

Game Theory - Encyclopedia Entry from the Library of Economics and Liberty

Jim Ratliff's Game Theory Course: 4.1 Introduction to Extensive-Form Games

Experience from a Course in Game Theory by Ariel Rubinstein



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