You must obey the leader

|Discontinued - Dont read, its really bad and cringe, and I dunno what I was thinking|

What if your whole class got the same message to do a set of things? What if if you don't do it, you will be wiped out of existence? What if you know that you don't have much time left?
That is what happened to one particular class on a normal day, and more and more lives have disappeared. Time is ticking, and they know only one person will survive.
(This is based of a film I once saw, but I can't remember the name the the main plot of 'the game' is the only thing that is from it).