Here's a new trailer for the upcoming third person free-to-play coop game, Warframe. The game is being developed by Digital Extremes for the PS4 and PC. Players control a member of the Tenno, ancient warriors who have awoken from centuries of cryosleep to find themselves in a war with the Grineer, a race of militarized humans, and the Corpus. The Tenno use advanced armor with unique properties, called Warframes in the war against the Grineer and Corpus. Warframe is out now for the PC through digital download (Steam), and has no current release date for the PS4.