This timeline ignores the internal chronological problems of the series, and also reaches across all media. Non-film entries are identified as such, and this is the actual sequence of events in the series so far:
- X-Men: First Class
- Set in 1962.
- X-Men Origins: Wolverine
Set 15 years before the events of X-Men, and implied to be set in 1979.- X-Men: Beginnings
- Comic containing prequel stories for Magneto, Rogue and Wolverine, all occurring prior to the first film.
- X-Men
- If the 1979 date for X-Men Origins: Wolverine is used, this film occurs in 1994, six years before its release date.
- X-Men 2: The Movie
- Comic containing an adaptation of the movie and prequel stories featuring Wolverine and Nightcrawler.
- X2: X-Men United
- Occurs after X-Men.
- X-Men: The Official Game
- Occurs after X-Men 2.
- X-Men: The Last Stand
- Occurs after X-Men: the Official Game.