You can play the first hour of Prey for free on PlayStation 4 and Xbox One. The Prey Demo: Opening Hour puts you in the role of Morgan Yu, lead scientist aboard Talos I, working on a scientific breakthrough. What starts off as an exciting first day of work very quickly takes a dark turn. You find yourself alone on board a lavish but abandoned interstellar research facility. Aliens have overrun the station and are hunting down any surviving crew members, including you. Should these creatures reach Earth, life as you know it will end.