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Game2by2 for iOS

By Peter Erno Eso Free

Developer's Description

This app helps you discover Nash equilibria (mutual best responses) of 2x2 normal form games. It is not an equilibrium solver, however - you need to know where to look.Select a pre-defined game from three classes (dominance solvable, coordination, and all other games, including ones with infinitely many mixed equilibria), or pick randomly-generated payoffs. The payoff entries are editable, so you can make up your own game as well. Use mixing sliders to control the players strategies. The expected payoff of a players best response is highlighted in red next to the best-reply strategy row or column.Press the button Is it Nash? to see if you have found a Nash equilibrium. Two additional buttons, RowMix and ColMix, which set Rows mixing so that Column is indifferent, and vice versa, may help you find mixed Nash equilibria. Another button highlights pure-strategy best-reply payoffs within the game matrix itself. Clicking on Hint presents information about the game currently displayed. A "Help" button in the top-right corner shows more detailed instructions and discusses ideas to take-away from this app.Send comments to Thanks to Renana Heller for her help in coding.

Full Specifications

What's new in version 1.2

- New button [BR] highlights pure best-response payoffs.- Improved user interface and better layout on larger screens.- "Help" provides more detailed explanation of the app and Nash equilibrium.


Release May 3, 2016
Date Added March 31, 2016
Version 1.2

Operating Systems

Operating Systems iOS
Additional Requirements Compatible with: ipad2wifi, ipad23g, iphone4s, ipadthirdgen, ipadthirdgen4g, iphone5, ipodtouchfifthgen, ipadfourthgen, ipadfourthgen4g, ipadmini, ipadmini4g


Total Downloads 0
Downloads Last Week 0
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