Mass Effect owned and published by Electronic Arts.

With a modern sheen that hints at a utopian future, the story of Mass Effect is anything but peaceful. Set in a universe in turmoil, much of the story of Mass Effect revolves around Commander Shepard, a veteran soldier whose job is to protect galactic civilization from the Reapers, a race of mysterious, powerful beings from beyond known space. It's an action-filled, dramatic, often hilarious space opera, and your choices determine how it pans out.

Mass Effect's primary story stems from its video games, however there are a number of novels and comics that supplement the material as well. Most of these do not currently contradict the main story, and can be considered canon. (For now, anyway.) Anything not considered canon is included under Release Order only.

In-Universe Chronological Order

Release Order (video games)

Release Order (film)

Release Order (novels)

Release Order (comics)