1. 2x2 Matrix Game

This program sets up a two-player, two-decision matrix game. Pairings may be fixed (same in all rounds) or randomly reconfigured after each round. You choose the number of rounds and each player's payoffs for each of the four possible outcomes. [Details...]

2. Bertrand Price Competition Game

This program sets up a multi-person game in which each person chooses a price in a Bertrand game with linear demand and constant marginal cost. The game highlights severe competitive pressures when there are several sellers. [Details...]

3. Centipede Game

This program sets up a centipede game in which two players make a series of decisions in alternating order. At each stage in the series, the player who has the decision must choose to Stop or Continue. The process continues until one person chooses to stop or until the final stage is reached. Payoffs are determined by the stage in which the process stops. The person who chooses Stop earns more than the other person, but payoffs typically increase with successive stages. [Details...]

4. ComLabGames Extensive Form Game

This program provides a graphical interface to create and run extensive form game experiments. [Details...]

5. ComLabGames Strategic Form Game

The module is based on a matrix representation of two player strategic form games. Using the game editor, the moderator determines the choices that characterize the set of pure strategies, the naming of the strategies and the two players, as well as the payoffs for each possible outcome of the game. Games are run from the edit mode, too. The moderator can view the history of participation by subjects and their choices, plus some basic statistics describing the games played. Both of these are continuously updated as the session proceeds. The results and the summary statistics are saved in an "html" file that can be imported into a spreadsheet or opened with a browser. [Details...]

6. Coordination Game

This program sets up a game in which each person chooses an "effort". Players are matched in groups of a specified size, and the payoff for each person is the minimum effort made by people in their group (including themselves). There is a cost of effort, which is a constant amount per unit of effort, and each person must pay the cost of their own effort. Thus the payoff is the minimum effort minus a unit cost times one's own effort. Efforts are required to be greater than or equal to a specified lower bound, and to be less than or equal to an upper bound. [Details...]

7. Cournot Quantity Competition Game

This program sets up one or more markets in which each person is a seller who chooses a production quantity. This is a Cournot game with linear demand and constant marginal cost. The game can be used to motivate discussion of the Nash/Cournot predictions. There may be tacit collusion with few sellers and fixed matchings, and there may be severe competitive pressures when there are several sellers. [Details...]

8. Didactic Web-Based Experiments in Game Theory

This site is based on the perception of game theory as the study of a set of considerations used by individuals in strategic situations. The goal is to deliver a loud and clear message that game theoretic models are not meant to supply predictions of strategic behavior in real life. [Details...]

9. Large Matrix Game

This program sets up a two-player, multi-decision matrix game, which allows asymmetries. Pairings may be fixed (in all periods) or randomly reconfigured after each round. [Details...]

10. Market Entry Game

This program sets up a multi-person game in which each person chooses whether or not to enter a market. The payoff for all people who enter is a decreasing function of the number of entrants, and the payoff for not entering is a constant. The incentives are typically such that each person would prefer to enter if the others are unlikely to do so, and would prefer to stay out if the others are likely to enter. [Details...]

11. Normal form Game software

This software allows normal-form game experiments to be conducted over the Internet. Within an experiment, subjects participate in one or more matches. Each match is a series of one or more stage games. Several methods of rematching subjects between matches are offered. [Details...]

12. Principal/Agent Game

This program runs a set of "Principal/Agent" games. The first mover (employer) makes a contract offer, and the second movers (worker) chooses whether to accept the contract. A worker who accepts a contract then chooses an effort level, which is costly to the worker but which benefits the employer. The possible contracts include fixed wage payments, along with possible ex post bonuses, monitoring, penalties, and/or profit sharing. If the contract only specifies a required fixed wage and an optional bonus, then the Nash equilibrium for selfish preferences in a one-shot game is to offer the minimum possible effort, since the wage is paid irrespective of effort. Efforts may be higher with fixed matchings or if participants are concerned with fairness and reciprocity. A number of contract options based (based on penalties and rewards) are also available. The game highlights issues of contract incentives, reciprocity, and strategy. [Details...]

13. Signaling Game (a.k.a. Beer/Quiche Game)

This program runs a set of two-person signaling games in which one person (the proposer) observes the true state of nature and makes a decision. The other person (responder) sees the proposer's decision but not the state, and makes a response. [Details...]

14. Traveler's Dilemma Game

This program sets up a game in which each person chooses a "claim". Players are matched in groups of a specified size, and the payoff for each person is the minimum claim made by people in their group (including themselves). [Details...]

15. Two Stage Game

This program sets up a two-player, two-stage game in which one player moves first and the other follows. You specify the number or rounds, with pairings that may be fixed (same in all periods) or randomly reconfigured after each round. You also choose numbers of decisions, their names for each player, and the players' payoffs for each of the possible outcomes. [Details...]

16. Volunteer's Dilemma Game

This program sets up a multi-person game in which each person chooses whether or not to "volunteer." The payoff for all people in a group is higher if at least one of them volunteers, but a volunteer incurs a cost that cannot be shared. The incentives are such that each person would prefer to volunteer only if it is likely that nobody else will do so. You may specify the cost of volunteering and the individual payoffs when there is at least one volunteer and when there is no volunteer. You also specify the group size and the number of rounds. Groupings may be fixed (same in all periods) or randomly reconfigured after each round. There may be two treatments with differing parameters; but a one-treatment setup is obtained by setting the number of rounds in treatment 2 to be zero. [Details...]