This isn’t a pre-rendered cinematic. This is all in-game footage from a live demonstration carried out by 64 players at E3. DICE’s “Battlefield 4” has gone big with multiplayer, as seen in this level, “Siege of Shanghai.” The destructibility of the series’ “Bad Company” games has returned, and just look at all the detail they’ve crammed into the level design. “Battlefield 4” will be available October 29th.