It's Alien week here at the United Federation of Charles and we're going to discuss the second installment of the franchise which was, in my opinion, one of the single-most influential movies of all time--for video games. Aliens inspired Halo, Metroid, Contra, Doom, Dead Space, and (I kid you not) Echo the Dolphin. Indeed, there's a ridiculous number of common elements in video games which come directly from Aliens. There's an excellent article on the phenomenon by Gamesrad...