Each black dot represents a healthy person, each red dot, an infected one. touch people to infect them. The infectivity slider represents the chance that a person will be infected after touching an infected person ( 10 being 100% and 1 being 10%). The severity slider dictates how long a person will survive after being infected. Have Fun! -neurotoxin why are you scrolling wanna play a game ok then look behind you YOU ARE DED DED DED!!! let's play hotter and cooler cooler cooler CoLdEr you're turning into ice... AAAAAAAAAAH WHAT DO I DO??? hey... WHY IS IT SNOWING? ugh. don't make me grab your axe. ugh. fine you win i guess sooooo ok... congrats you successfully got rickrolled. NeVeR GonNa gIvE YoU Up fine...