Requiem is a 32-level vanilla megawad released by map designers who previously worked on Memento Mori I & II. It was conceived as “the last great megawad for Doom” as Doom was seen as “dying” in obsolescence after the release of Quake brought true 3D to the first-person shooter genre.

It is notable for popularizing tricks that are used even today, including faked 3D bridges.