A peek behind the curtain at the trailers gamers see at E3

If you've been watching the Electronic Entertainment Expo (E3) this week, you've probably seen a lot of sleek trailers for upcoming video games. Many game developers use E3 to tease gameplay footage in order to give gamers an early glimpse of what a highly anticipated game like "The Division" or "Titanfall" will actually look like in action. But as the kerfuffle over Sega and Gearbox's eagerly awa...