Start with a problem. Say what happens next. There is no order of play. Anyone can add to what happens. If two or more players have different ideas of what happens next, they each roll 2d6, re-rolling ties. What the highest roller said happens next. The host may veto what another player says, but this must be done before dice are rolled. The game ends when the problem is resolved.
DREAMING DRAGONSLAYER 
“may veto what“, I suppose?
Yup. Late night posting. >.<
Start with a problem. Say what happens next. There is no order of play. Anyone can add to what happens. If two or more players have different ideas of what happens next, they each roll 2d6, re-rolling ties. What the highest roller said happens next. The host may veto what another player says, but this must be done before dice are rolled. The game ends when the problem is resolved.