Age of Apocalypse
1995When Legion travels back in time to kill Magneto but accidentally murders Professor X instead, reality is rewritten into a world where Apocalypse conquered North America unchallenged. For four months every X-book was replaced by an alternate-reality counterpart. Magneto leads the X-Men in Xavier's memory, fighting to restore the original timeline before the Human High Council launches a nuclear strike to stop Apocalypse.
34 core issues, 8 optional tie-ins/crossovers
PrologueLegion Quest part 1 — Legion's plan to travel back in time
PrologueLegion Quest part 2
PrologueLegion Quest part 3 — X-Men pursue Legion into the past
PrologueLegion Quest part 4 — Xavier is killed; reality shatters
Introduction to the Age of Apocalypse reality — Magneto's X-Men, Apocalypse's America
Magneto's strike team races to rescue humans. Replaces Uncanny X-Men.
Rogue leads a team against Holocaust. Replaces X-Men.
Cyclops and Havok serve Apocalypse's elite. Replaces X-Factor.
Gambit and the X-Ternals seek the M'Kraan Crystal. Replaces X-Force.
Colossus and Shadowcat's young mutant team infiltrate the Core. Replaces Generation X.
One-handed Wolverine and Jean Grey fight Apocalypse's forces. Replaces Wolverine.
Nightcrawler seeks Destiny in Avalon. Replaces Excalibur.
Nate Grey, the ultimate mutant, escapes Sinister's control. Replaces Cable.
Tie-InWhat happened to the non-mutant Marvel heroes in the AoA reality
Tie-InContinued look at AoA versions of Fantastic Four, Spider-Man, and others
The final battle — Magneto vs. Apocalypse, reality is restored
EpilogueReturn to the prime timeline — aftermath of the Age of Apocalypse
EpilogueAftermath — dealing with the return to normal reality