Several outlets are providing guidance on which movies to watch before the release of "Avengers: Doomsday", with some offering specific lists of marvel movies and mcu projects. The recommended viewing lists vary in length and scope, with some including x-men movies and others focusing on the broader mcu. It appears that "Avengers: Doomsday" may be related to "Avengers: Secret Wars", but the nature of this connection is unclear.