However, I had a thought a while ago.
What if someone were to run a closed setup of some sort in which it was all Town players and the players weren't informed of this?
Distribute some power roles, and mod-kill someone at random (prove by posting in a PT with dice tags) each night, and give the win to the last (three? two? one?) survivor(s), or give all survivors the win if someone realizes there are no scum.