Marvel's Avengers: The Extinction Key
The official prequel to Marvel's Avengers from Marvel, Crystal Dynamics, Eidos Montreal, and Square Enix, with an exclusive adventure that leads into the game itself.
The official prequel to the blockbuster action video game Marvel's Avengers, written by bestselling author Greg Keyes. The game is being developed by Crystal Dynamics, Eidos Montréal, Nixxes, and published by Square Enix. It will be released September 4, 2020 for PlayStation 4, Xbox, Stadia, and PC.
Captain America, Iron Man, Thor, Black Widow, and the Hulk. Earth's Mightiest Heroes have assembled to face world-class threats whenever and wherever they might appear. They are the AVENGERS.
Yet some threats transcend the ages. Centuries ago, a never-before-seen group of heroes gathered as the Avengers of their ancient era to fight the Zodiac, foes who wielded unimaginable arcane energies channeled through a mysterious Key. The resulting battle devastated vast swaths of the planet. The Key was lost and the Zodiac went into hiding, influencing world events from the shadows, waiting for the stars to align to usher in their return.
When strange beings exhibiting the traits of the twelve astrological signs appear in the 21st century, the Avengers again answer the call to assemble. But when this modern team of heroes are forced to divide their efforts, each encounter leads to their opponents gaining strength. Once again, the hunt is on for the Extinction Key...and if the Avengers don't find it, our world will be lost.
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Greg Keyes
Greg Keyes doesn’t just write fantasy—he builds mythologies that feel like they’ve existed for centuries. His worlds are intricate, his characters fierce with purpose, and his stories hum with the tension between ancient forces and deeply human choices. Whether he’s delving into dynastic battles in The Kingdoms of Thorn and Bone or breathing new life into beloved universes like Star Wars or The Elder Scrolls, Keyes brings a scholar’s mind and a storyteller’s soul to every page.

