The world groans under the Darwinian conqueror Apocalypse's rule. Under his thumb, America has become a dark and dangerous dystopia where mutants rule, humankind suffers, and survival of the fittest is all!

It begins here! The critically acclaimed, fan-favorite storyline that rocked the X-Men Universe to its core is collected across four volumes! In a cracked-mirror world ruled by the genocidal mutant despot Apocalypse, only one hope remains: Magneto and his Astonishing X-Men!

See your favorite mutants through a dark glass as the epic that literally rebuilt the X-Men in eight miniseries and more continues!

The original Age of Apocalypse saga comes to an explosive end as the alternate-universe X-Men's desperate gambles bear fruit!

Charles Xavier is dead - killed in the past during a time-travel accident - and without his dream, the world has become a nightmare! Apocalypse rules with an iron fist, ruthlessly enforcing his "survival of the fittest" creed - but hidden among a downtrodden humankind are Magneto's ragtag freedom fighters: the X-Men!

Learn who lives and who dies in either reality as the apocalyptic arc ends in treachery and tragedy! While certain heroic humans prove their mettle without armor or magic hammers, it's a race to see who the X-Men will destroy first: Apocalypse or themselves! But even with the crisis concluded, new allies and enemies emerge, guaranteeing that reality will still never be the same!