I believe fastings should have a "Quit" option before the game actually begins.
For example, imagine you're one of the first people to join a fasting. 30 minutes later, the room isn't full yet and something unexpected happens and you have to leave. No problem! You just have to click on the "Quit" button, you leave and it's one inactive less in the game.
Maybe something like, if you fail to vote once, your right to vote is denied until you contribute to the game again? (you would have to click on a "Check" button or something like that - yeah, I love buttons xD)
noooo there was another game called the duel a couple of years back that had an unenroll aka quit button for before the game started, and it ultimately led to the game being removed from the site because it would never fill, as people kept getting impatient and unenrolling