The Ur-Dragon encounter in Dragon's Dogma will take the form of an asynchronous, ongoing online encounter, where players and their parties from around the world can compete online to take down the Ur-Dragon. The effect and damage done by of each of these parties will be combined until the creature is defeated. This will take multiple encounters, but all players who inflict damage on the Ur-Dragon will receive great spoils. The person who inflicts the final blow will receive the greatest reward of all, and all slayers of the Ur-Dragon will have their names and play times recorded in the hall of fame for bragging rights. Meanwhile, offline players will still be able to take on the Ur-Dragon alone, but will receive different rewards at the end.
Looks pretty damn fun, although I imagine it'll come down to mostly luck to beat out hundreds of players for the final strike on it. Still, pretty interesting way to implement more asynchronous multiplayer stuff.