READ ALL INSTRUCTIONS!!!!! (Scroll down) Press the green flag to start. Orange = infected Blue = healthy If an orange is touching the green healing area they have a 50% chance to be cured, if a blue is touching the green healing area they have a 25% chance to be given a mask. For a blue to become infected they need to be touching an orange when they stop moving, if a masked dot is touching an orange when it stops moving it reverts to a blue. There will always be at least one orange on the screen. Use the sliders to adjust the settings. To reset the # of people press the green flag.