Thought I would give this a try.

Rules of the game
Each person must count... (Well that's a great idea <.<)
When we reach 1000 We can start another one... I don't know how it'll work but lets give it a try

Example:

Poster A: 1
Poster B: 2
Poster C: 3

And so fourth! so lets start this counting

And I say lets start at 1