The classical normal-form game: the prisoner’s dilemma. Each prison has two choices: confess and silent. If they both confess, each one serves for one year, and two years as they remain silent. If one of them confesses, the prison who confesses does not need to serve, and the other one get a sentence of three years.
|Player 1 ||Player 2|
|Confesses ||Silent |
|Confesses ||(−1, −1)||(0, −3) |
|Silent ||(−3, 0)||(−2, −2) |