Disney+ has released a "Countdown to Doomsday" list of movies that should be watched before Avengers: Doomsday.
Getting through all of them would take around 42 hours:
- X-Men (2000)
- X2: X-Men United (2003)
- Captain America: The First Avenger (2011)
- The Avengers (2012)
- Avengers: Infinity War (2018)
- Avengers: Endgame (2019)
- Loki Seasons 1 & 2 (2021-2023)
- Shang-Chi and the Legend of the Ten Rings (2021)
- Spider-Man: No Way Home (2021)
- Black Panther: Wakanda Forever (2022)
- Doctor Strange in the Multiverse of Madness (2022)
- Deadpool & Wolverine (2024)
- Captain America: Brave New World (2025)
- Thunderbolts (2025)
- The Fantastic Four: First Steps (2025)