Overwatch's second major event - Halloween Terror - has now debuted and brings with it new Halloween-themed loot boxes. You can view the trailer for the event below
It involves a 4-player co-op mode which is prett cool. You can only be 4 characters (Hanzo, McCree, Soldier and Ana) however the concept means I think the game could evolve to much more than just a PvP casual and ranked mode.
Its worth a go whilst it's out for a month and try to pick up a few halloween loot boxes.