Mass Effect is a series of science fiction action role-playing third person shooter video games developed by the Canadian company BioWare and released for the Xbox 360, PlayStation 3 and Microsoft Windows, with the third installment also released on the Wii U. The first game in the trilogy centers on a player-created character named Commander Shepard, with the mission to save the galaxy from a race of mechanical beings known as the Reapers and their followers, including Saren Arterius. The first game sees Shepard facing Sovereign, a Reaper left as a vanguard, who plans to allow the Reaper fleet hibernating in extra-galactic dark space to invade the Milky Way, and destroy all sentient organic life, continuing a mysterious cycle of destruction. The second game takes place two years later, and sees Shepard battling the Collectors, an alien race abducting entire human colonies in a plan to help the Reapers return to the Milky Way. The final game of Shepard's trilogy centers on the final battle against the Reapers.

All three games have received critical acclaim for their storyline, characters, romances, voice acting, choices and the depth of the galaxy.[1] Video game website GamesRadar called Mass Effect the best new franchise of the generation, saying that the galaxy was so well-constructed that it felt like a decades-old franchise and that it represented "a high-water mark for video games as a story-telling medium