Futures which may or may not come to pass in the Marvel Universe…
- Marvel Masterworks: The Uncanny X-Men, vol.5
- Reprints X-Men #132-140 (April 1980 – December 1980) & Annual 4 (1980); Phoenix: The Untold Story (April 1984) & Bizarre Adventures #27 (July 1981).
Note that only the events of X-Men #132-136 & Phoenix: The Untold Story take place in this timeline, the latter replacing X-Men #137, and the timeline diverging from that point. - X-Men: Days of Future Past – Doomsday
- Reprints X-Men: Days of Future Past – Doomsday #1-4 (September 2023 – December 2023).
- X-Men: Days of Future Past
- Reprints Excalibur #52 & 66-67 (July 1992 & June 1993 – July 1993); Fantastic Four Annual #23 (1990); Hulk: Broken Worlds #2 (July 2009); The New Mutants Annual #6 (1990); Uncanny X-Men #141-142 (January 1981 – February 1981) & Annual #14 (1990); Wolverine: Days of Future Past #1-3 (December 1997 – February 1998); & X-Factor Annual #5 (1990).
Earth 811 — Days of Future Past:
- Hercules: Prince of Power
- Reprints Hercules #1-4 (September 1982 – December 1982); & Hercules #1-4 (March 1984 – June 1984).
- Hercules: Full Circle
- Reprints Marvel Age #4 & 65 (July 1983 & August 1988); Marvel Comics Presents #39-41 (all January 1990); Marvel Graphic Novel #37 (1989); & Marvel Tales #197 (March 1987).
Earth 829 — Hercules in the 24th Century:
- Deathlok the Demolisher: The Complete Collection
- Reprints Astonishing Tales #25-28 & #30-36 (August 1974 – February 1975 & June 1975 – July 1976); Marvel Team-Up #46 (June 1976); Marvel Fanfare #4 (September 1982); Marvel Spotlight #33 (April 1977); Marvel Two-In-One #27 & #54 (May 1977 & August 1979); & Captain America #286-288 (October 1983 – December 1983).
This story crosses over with the Marvel Universe.
Earth 7484 — Deathlok the Demolisher:
- Iron Man 2020
- Reprints The Amazing Spider-Man Annual 20 (1986); Astonishing Tales: Iron Man 2020 #1-6 (April 2009 – September 2009); Death’s Head #10 (September 1989); Iron Man 2020 original graphic novel (1994); Machine Man (1984) #1-4 (October 1984 – January 1985); & What If…? #53 (September 1993).
This story crosses over with the Marvel Universe.
Earth 8410 — Machine Man and Iron Man 2020:
- History of the Marvel Universe
- Reprints History of the Marvel Universe #1-6 (September 2019 – February 2020).
Implied to be the end of all these alternate futures.