JH GRUGER
Official Website
The Sentinel Suppressions Series
VOX PROXIMA PRESS
JH Gruger is an award-winning hard science fiction author of near-future alien invasion thrillers. His debut series, The Sentinel Suppressions, follows humanity's desperate defense against alien Sentinels who attack Earth when human advancements threaten the galactic order. Neurodiverse humans have the keys to survival.
NEWS & REVIEWS
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Gold Book Award and Five-Star Review for Tyrants of Gravity by Literary Titan, April 2026 "...for readers who want their science fiction to argue, bruise, and burn. Tyrants of Gravity is a sci-fi novel that thinks big and hits with surprising heart."
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Five-Star Review for Tyrants of Gravity by Readers' Favorite, January 2026
"Lovers of sci-fi novels blended with adventure, suspense, and action will find Tyrants of Gravity by JH Gruger an enthralling read."
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2025 Readers' Favorite Bronze Medal Winner,
Fiction - Science Fiction genre
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Finalist: American Writing Awards 2024
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Finalist: Literary Global Awards 2024
Fiction, Fantasy & Sci Fi
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Fiction, Thriller/Adventure
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Global Book Awards Bronze Medal Winner 2024
Techno-Thriller
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Five Star Review for Gravity of Sol-3 by Readers' Favorite November 2024
"A tense, cerebral tale of rebellion and resilience set in a near-future Earth controlled by alien Sentinels. . . one of the most chilling antagonists I've encountered in recent science fiction."
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Editorial Book Review December 2024
"Engineering New Worlds: How JH Gruger Fuses Science & Storytelling in His Sci-Fi Series"
What if the greatest danger to humanity wasn't on Earth — but from the sentinels watching from space?
Feral science fiction from JH Gruger. “For readers who want their science fiction to argue, bruise, and burn … that thinks big and hits with surprising heart.”—from Literary Titan’s 5-star review.
