Board Thread:General Discussion/@comment-29711200-20161203230452/@comment-25646419-20161203230831

Gamethrowing = intentionally trying to lose. Actively going against your role's goal.

If a person claims Mafioso to a Jailor who has executions left, they're very likely to be found guilty of gamethrowing. However, if the Mafia was certain to win, then saying it to the Jailor isn't a big deal.