Life has ceased. Man is but a myth. And now, even the machines have begun to fail. Lead Horatio Nullbuilt and his sarcastic sidekick Crispin on a journey through the crumbling world of Primordia, facing malfunctioning robots, ancient secrets, and an implacable, power-hungry foe.
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What Happened to the Humans? Set in a post-apocalyptic world strewn with cast-off machines, Primordia tells the story of Horatio Nullbuilt, a stoic robot who values his solitude and independence. Horatio spends his days studying the Book of Man, sparring with his droid companion Crispin, and tinkering with the airship they call home — a peaceful existence that becomes threatened when a rogue robot steals the energy source that the pair needs to survive. When Horatio and Crispin’s search for energy brings them to the dazzling city of Metropol, the simple quest to recover their stolen power core leads to unexpected discoveries about Horatio’s origins and a new understanding of the legendary humans who walked the earth before him.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.















What Happened to the Humans? Set in a post-apocalyptic world strewn with cast-off machines, Primordia tells the story of Horatio Nullbuilt, a stoic robot who values his solitude and independence. Horatio spends his days studying the Book of Man, sparring with his droid companion Crispin, and tinkering with the airship they call home — a peaceful existence that becomes threatened when a rogue robot steals the energy source that the pair needs to survive. When Horatio and Crispin’s search for energy brings them to the dazzling city of Metropol, the simple quest to recover their stolen power core leads to unexpected discoveries about Horatio’s origins and a new understanding of the legendary humans who walked the earth before him.
Life has ceased. Man is but a myth. And now, even the machines have begun to fail. Lead Horatio Nullbuilt and his sarcastic sidekick Crispin on a journey through the crumbling world of Primordia, facing malfunctioning robots, ancient secrets, and an implacable, power-hungry foe.
We are not affiliated with IsThereAnyDeal.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.