Here is the full length 3 minute "Take Back The Earth" trailer to Mass Effect 3.
The Mass Effect franchise is set in a science fiction universe blending world-class shooter combat with interactive and cinematic storytelling and space exploration. It is one of the most highly decorated series in the history of games, having earned over 200 international awards including the 2011 AIAS Interactive Achievement Award for Game of the Year for Mass Effect 2. Recently announced as the winner of Spike TV’s 2011 Video Game Awards Most Anticipated Game of 2012, Mass Effect 3 enhances all elements of gameplay from its critically acclaimed predecessors and tells the beginning and end of the epic war against a highly advanced alien race, and Commander Shepard’s desperate struggle to take Earth back.
Mass Effect 3 is available March 6th, 2012.