[img id='75177' txt='' align='left'> # _ To celebrate the best Halloween Treyarch and Infinity Ward presents to the frequent players of Call of Duty: Black Ops and Modern Warfare 2, a whole weekend of double experience. The period will end on Tuesday night and will help the players in the acquisition of prestige tokens, which are useful to unlock certain features in Modern Warfare 3, the last war FPS on the market waited for the next 8 November.