Game events

Game events are limited-duration activities which occur during holidays, or to further the story. Some events thus far have been:
 * Trick or Treat, which took place during Halloween 2007.
 * Kill General British Contest, which took place during the end of beta.
 * Seasonal Holiday Observance, which has been taking place since December 11, 2007.
 * Days of Remembrance, which took place on December 21 and 22, 2007.
 * Operations Immortality