The ubiquitous Gauntlet App will cause students to lose half of their hard-earned points, thus expects groans of misery when this app is used! You can launch this app in the Teacher Launchpad to 'fingersnap' half your students randomly. Otherwise configure such that only a limited number of students (namely the fastest few students reaching this activity) can click on the app. This app with the graphics is pre-configured in "Slide Templates - Exit'.