Activision Blizzard, maker of such best-selling video games as Call of Duty and World of Warcraft, signed a new lease for 46,701 square feet of office space at LNR Warner Center IV, a two-building, 509,923-square-foot office complex located at 21215 and 21255 Burbank Blvd., one block north of the Ventura (101) Freeway, in Woodland Hills, CA.