The turn-based tactical strategy game XCOM: Enemy Unknown now has an interactive trailer on YouTube. You start it up, and get rolling right into the first decision. Once a decision shows up on the screen (annotations must be on), click on it and it will jump to the proper point in the video. You watch as the game unfolds before your eyes: your soldiers take place behind cover and kill aliens. Although you don’t have total freedom, it’s just enough to give a feel for the action. It’s how a trailer should be done.
Give it a shot: