click on the purple button or the orange button to join that side. click on the black button or press SPACE to make the timer count down (the timer is on the black button) click on one of the buttons with the letter S on them to "snitch" or "betray" that side (by that i mean you lower the amount of people on that side) once the timer hits zero the side with more people wins you can not see the amount of people on that side until the timer hits zero