Mass Effect 3: Leviathan is an addition to the third-person role-playing action game Mass Effect 3. In the addition, Shepard will be joined by an ancient reaper, and the gameplay will be expanded with new weapons and unique upgrades. You can learn more about the origins of the reapers and unravel the mystery that surrounds the legendary Leviathan.
The add-on requires the original version of Mass Effect 3.