Disney released a curated watchlist ahead of Avengers: Doomsday to prepare audiences for the December 18 film's multiversal collision storyline. The list draws from multiple eras of Marvel cinema, spanning classic X-Men films alongside recent MCU instalments including Wakanda Forever and The Fantastic Four: First Steps.

Despite appearing comprehensive, the watchlist excludes films with direct narrative bearing on Doomsday's plot. Captain America: Civil War is notably absent, yet it establishes the fractured state of the Avengers that persists into Infinity War—skipping it creates an unexplained jump from the original Avengers film to its 2018 sequel. The Marvels is similarly omitted despite its closing scene linking Monica Rambeau to the X-Men dimension expected to feature prominently in Doomsday, potentially leaving uninitiated viewers confused about character placement. The omissions likely reflect an effort to reduce viewing volume rather than plot necessity.