Rather than going down the usual route or releasing a rather pointless teaser , the makers of next summer’s Battleship have decided to release a full trailer, showing off navy meet aliens premise of this board-game adaptation. Here’s the synopsis: ‘Peter Berg produces and directs Battleship, the epic action-adventure that unfolds across the seas, in the skies and over land as our planet fights for survival against a superior force. Based on Hasbro’s classic naval combat game, Battleship stars Taylor Kitsch as Hopper, a Naval officer assigned to the USS John Paul Jones; Brooklyn Decker as Sam, a physical therapist and Hopper’s fiancée; Alexander Skarsgård as Hopper’s older brother, Commanding Officer Stone of the USS Samson; Rihanna as Lt. Raikes, Hopper’s crewmate and a weapons specialist on the USS John Paul Jones; and international superstar Liam Neeson as Hopper and Stone’s superior (and Sam’s father), Admiral Shane.’ The movie is out April 20th, 2012, but look above for the first poster and below for the trailer.