Library Journal:
“Taking cyberpunk to the next level, this conclusion to Edelman’s trilogy (Infoquake, MultiReal) presents a drama of future technology that combines action with psychosocial intrigue. Tension comes as much from the clash of ideas as from physical confrontation. Highly recommended.” (Full Review)
Publishers Weekly:
“Edelman presents a gritty, tech-heavy thriller that builds on cyberpunk tropes in interesting and detailed new ways. The world developed in 2006’s Infoquake and 2008’s MultiReal has become inflamed with civil war and rebellion as MultiReal, a technology that mathematically projects possible futures to aid in decision making, suddenly becomes inaccessible. Into this chaos, MultiReal-D makes its first tentative appearance… Numerous characters seek their own goals in a labyrinthine plot, but Edelman does manage to bring his disparate threads together to create a coherent and even cohesive conclusion that’s most accessible and satisfying to those who have read the earlier books.” (Full Review)
Paul Witcover, Locus Magazine:
“With Geosynchron, David Louis Edelman brings his Jump 225 trilogy to a triumphant close. Reading this final volume, which puts an unexpected spin on everything that has come before, made me think of Frank Herbert’s Dune… By the end, the wisdom and efficacy of Edelman’s approach is manifest. This smart, idiosyncratic blend of cyberpunk, libertarian entrepreneurship, and social engineering will, I think, stand as a seminal work of 21st century SF.” (Full Review Not Online)
Charlie Jane Anders, io9:
“[Geosynchron]’s here at last, more warped than ever… Geosynchron suggests that spies and armies are all well and good — but savvy marketing and B-school cleverness can move the world just as much… Geosynchron is an engaging conclusion to a thrilling, thought-provoking saga.” (Full Review)
Fantasy Book Critic:
“Geosynchron transcended [my concerns] and it truly made me exclaim: more, more, more!!!… The character arcs continue in a natural way, with Natch becoming one of the most remarkable recent heroes in SF… Geosynchron achieves a rare feat for a trilogy-ending volume, namely it takes the series one level higher, beyond mundanity to true sense-of-wonder SF, so it finally plays on the level of the masters of modern SF like [Alistair] Reynolds and [Peter F.] Hamilton… An A+ and so far the best core-SF novel I’ve read in 2010.” (Full Review)
SFFWorld:
“The novel does have it all — tight and dramatic conflicts, engaging and organic thematic elements, the highest of high stakes, and solid characterization… At this early stage in the year, Geosynchron is at the top of my best reads list — it has set the bar very high for anything else I’ll be reading this year. The Jump 225 trilogy is a must-read, an instant classic and a work of SF that will help define this first decade of the 21st century, and could cast a long shadow for many years to come.” (Full Review)
The Agony Column:
“Edelman has created a wonderfully detailed vision that harks back to the most classic science fiction series… Edelman has arguably upped the ante here… And for all his unique inventiveness, he still manages to populate his worlds with characters we can understand and sympathize with — even though they’re often not particularly likable… Edelman’s got a peculiar and entertaining combination of space opera and cyberpunk, with a feel for deep history that gives both aspects of story a depth and dimension that is unusual, in the best possible way… This is what you want from science fiction. You want the vision of the writer to inform your vision of your life.” (Full Review)
Grasping for the Wind:
“Edelman’s concluding novel, long in the making, is just amazing. How anyone could make a boardroom discussion so exciting is beyond my comprehension. With words, not lasers, Edelman produces a fiction that has no peer… Edelman ended his trilogy in the best way possible… David Louis Edelman’s Jump 225 trilogy is one of the best space operas currently in print. Action, intrigue, and a powerful story come together with a unique beauty of creative prose. Geosynchron completes the tale of Natch and his fiefcorp in a potent way that is both rare and extraordinary. If you read no other science fiction story this year, read the Jump 225 trilogy.” (Full Review)
The Dragon Page Cover to Cover:
“Probably some of the best sci-fi written this decade… Amazing stuff.” (Full Podcast) (section on Geosynchron begins at 38:36)
Washington DC Speculative Fiction Examiner:
“It felt like the first two books in Edelman’s Jump 225 series had twisted reality about as far as it could go. However, with the last book in the trilogy, Geosynchron, we realize we were only peeking into the rabbit hole before. Now we get a swift kick that sends us tumbling all the way to the bottom… It is a pell-mell dash from start to finish, and you’ll hardly get a chance to breathe along the way.” (Full Review)
SF Site:
“It really is non-stop action… But then, melodrama isn’t meant to be believable, just to be engaging and thrilling, and that is something Edelman achieves with aplomb.” (Full Review) (mostly negative review)
Tom Doyle, WSFA Small Press Award-winning author:
“Geosynchron is an amazing wrap-up. The most surprising aspect of this last book was its high emotional level. This is hard SF with a shocking amount of heart.” (Link)
Harriet Klausner, Amazon’s #1 Customer Reviewer:
“A great finish to a terrific technological science fiction thriller. Somehow David Louis Edelman paints his vision even darker and grittier than in the previous extremely dark and gritty tales… A sort of cyberpunk modernizing of WarGames, Geosynchron is a superb story as the complex myriad subplots come together.” (Full Review)
Elitist Book Reviews:
“Geosynchron (and the two preceding novels, Infoquake and MultiReal) is an incredible entry into the SF genre… Can you begin to see why we loved Geosynchron? A business, [R. Scott] Bakker-like story that pulls the actual intelligent portions of The Matrix into a strong, character-driven novel (and series)? Yeah. We’ll pay money for that every time. Here is what you are going to do. You are going to go to your local bookstore and pick up the full Jump 225 Trilogy. Infoquake. MultiReal. Geosynchron. Go buy them now.” (Full Review)
Liviu Suciu, Fantasy Book Critic Reviewer, on GoodReads:
“(5 stars) The whole Jump 225 series is probably the best that mundane SF has to offer… Geosynchron takes the series to another level… the mix of superb action and great characters that made MultiReal very good and a great middle novel after the world-building of Infoquake, is even better done here.” (Full Review)
Erik Beck:
“It is my enthusiasm for the series, my joy at what I have read over the course of the three novels, and the notion that this book is great fun that leads me to encourage people to read it… This is science fiction, with the emphasis on the science. This is the world that could someday happen. Everything in this book is a logical (though not necessarily preferable) extension of today’s society. So that takes care of the science aspect. What about the fiction? Well, the fiction is one hell of a story… David skimps neither on story nor on characterization.” (Full Review)
Andron, Goodreads reviewer:
“(5 stars) Best book of 2010 so far! Very satisfying end to a challanging and intelligent trilogy… This trilogy just has to be part of every well equipped book collection.” (Full Review)