The rules are as follows:
"Australian Indoor-Rules Quiddich is played with a dark hallway and a hard rubber ball. The best kind is a rubber ball with a solid core and an LED in the center that lights up on impact. Sometimes they give them away at trade shows or conventions as a promotional freebie. The hallway should be as close to pitch-black as you can get it.
Throw the ball at each other as hard as you can. That’s it. You are free to defend yourself in any way that doesn’t make you look like a cringing wuss. Use of bats is not encouraged, but they can be used for defense as a house rule.
No score is kept and there is no clear way to win. Play continues until you stop."
For the PPC, this translates into "Cause as much damage as you can while you run around for the ball in the dark. Least injured team wins, outside of forfeit." It is probably also worth noting that contrary to the above recommendation, bats are standard equipment for PPC players for both offense and defense.