User blog comment:Lancer1289/All Good Things Must Come to an End/@comment-24174486-20130221183139/@comment-4950455-20130221212554

The big twist at the end of ME3 is that the entity which created the Reapers and the final component to the Crucible that you've been searching for are one and the same. Leviathan does not spoil that, and provides much more solid foreshadowing of the former's existence then what we got in the original game.