Mass Effect is a third-person shooter, action role-playing video game series developed by BioWare. The original trilogy largely revolves around a soldier named Commander Shepard, whose mission is to save the galaxy from a race of powerful mechanical beings known as the Reapers and their agents, including the first game's antagonist Saren Arterius. The final game of Shepard's trilogy centres on the war being waged against the Reapers.