Figure 1.

Four example screenshots representing questions from the Geography, Art, Language and Weight topics as seen by participants. Half the questions from each topic included images and half did not. Participants could either click one of the two blue buttons showing two possible answers (one correct, one incorrect), or click the red button which allows participants to copy someone else within their group. The number at the bottom is a countdown timer that forces participants to answer within 15 s. Player ID numbers are generated randomly for each participant when they begin the quiz. Here, three example screenshots come from one player (ID 538) and one from another player (ID 753). In reality, all participants view each question simultaneously. Note: all map images used in the quiz were sourced from https://www.eduplace.com/ss/maps/ and edited accordingly.