Dots & Boxes begins with four rows and four columns of dots, leaving nine small squares between them. On each turn, draw one unused horizontal or vertical edge between neighbouring dots. Drawing a square’s fourth side claims it for one point.

A line shared by two squares can complete both and score two points. Claiming a box lets you draw again, sometimes several times in succession. Otherwise play passes to the next person. The match ends when all nine boxes are claimed or eight minutes pass.

Among players still in play, the highest score wins and tied leaders draw. In a two-player match, missing the 30-second turn window passes play to the opponent. With three or four players, the person who times out leaves the match and loses.