Iron Man story arcs

A time rift causes some of Marvel's most well known heroes to come into existence over three hundred years early, in 1602.

The story of Earth-295, an alternate Marvel universe. In a world without the leadership of Charles Xavier, it is up to his friend, Magneto, to fight against the rule of Apocalypse and his Horsemen.

Ghuar, Llyra, and Attuma join forces to launch an attack on the surface world in a bid for global domination using the armies of Atlantis and Lemuria.

In the United States, a Super-human Registration Act is passed, which decrees that all Mutants or Super-Humans must register with the government, giving all personal information, as well as powers.

The world's population gains super-powers after the Inhuman Terrigen Mists are released into the atmosphere in this dystopian view of the future.

Reality's flipped upside down by the Scarlet Witch when Mutants are the majority.

Death resurrects Thanos who acquires the six infinity gems and kills half the life in the universe in her honor with the Infinity Gauntlet. Adam Warlock leads Earth's greatest heroes against Thanos.

An alternate reality in which mutants are turned into flesh eating zombies, set on Earth-2149.

The culmination of the X-Traitor storyline and the lead in to Heroes Reborn. Onslaught attempted to recreate the world in his image, only to be defeated by the combined sacrifice of Earth's heroes.

The Secret Wars was a ground breaking mini-series from Marvel that brought all of Earth-616's greatest heroes together to battle with the worst villains under the watchful eye of the Beyonder.

"The Ultron Initiative" is a comic book arc running through #1-6 of (The) Mighty Avengers. This is the first arc of this title, and is a tie-in of the Initiative.