The Crown Dominion faces its greatest crisis in millennia.
Peter F. Hamilton’s explosive finale to “EXODUS™: The Archimedes Engine” concludes the duology with “EXODUS™: The Helium Sea,” arriving June 16, 2026, and available for pre-order now in the US, Canada, and the UK.
Published by Random House Worlds and set in the expanded world of EXODUS™, the upcoming sci-fi action-adventure RPG from Archetype Entertainment, “The Helium Sea” plunges readers into the climactic battle as Finn and his burgeoning rebellion wage their desperate fight for freedom. But this time, ancient allies emerge from the void.
For millennia, the Crown Dominion has been at relative peace, with the Celestials in control and the human population little better than serfs. Now, an exiled faction that has waited seven thousand years beyond the Helium Sea returns to claim vengeance, threatening to change the balance of power in the Centauri Cluster forever. For Finn and his human allies, this is an unprecedented opportunity to earn a place of independence – if they can master ancient artifacts of unimaginable power while outwitting forces determined to crush them.
"Counted among the greatest minds in science fiction – and one of my own favorite authors – Peter F. Hamilton helped lay the foundations of the EXODUS universe,” said James Ohlen, Co-Founder and Executive Creative Director of Archetype Entertainment. “He then expanded it with two remarkable novels: The Archimedes Engine and, most recently, The Helium Sea."
“The Helium Sea is the conclusion of the chain of fearsome events that began in The Archimedes Engine. It follows the individual stories of Finn and Terence and the archon spy masters of the Centauri Cluster as they struggle to understand exactly what is happening and who is responsible for playing the greatest political game of all,” shared Peter F. Hamilton. “Each of them has their own goals to achieve so they can expose and defeat the chaos and violence Thyra has unleashed on the Crown Dominion. Chased by vengeful navy forces and lethal agents, they are forced to travel to star systems light-years apart to find desperately needed answers. But preventing a disaster thousands of years in the making is going to come with high personal cost. Meanwhile, Thyra, the newly crowned eternal empress, is discovering that her own family hasn't been entirely truthful with her about the outcome of their plans for conquering the Centauri Cluster.”
Hamilton’s grand conclusion unleashes galaxy-sweeping conflicts and civilization-ending stakes, making “The Helium Sea” essential reading for science fiction fans. The uprising reaches its crescendo on June 16, 2026.