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Bifrost Down (Exodus, #2) was the most recently released book by Jon R. Osborne, on August 26th, 2025.
Jon R. Osborne Stats: The most read book by Jon R. Osborne on Book Notification is When the Axe Falls, the 7th novel in the Omega War series.
Below is a complete list of Jon R. Osborne books in publication and chronological order, broken down by series. The most popular series by Jon R. Osborne is The Guild Wars Series.
A found family fights for survival against ancient enemies across a galaxy of political intrigue and vengeance.
Teaches beginners key skills needed to succeed as authors.
An ancient enemy emerges to threaten the galaxy, pulling legendary mercenary companies into a war across dangerous worlds.
Science-fiction collection set in a mercenary bar called the Lyon's Den.
Heroic fantasy anthology where valor must hold or civilization will fall.
Human mercenaries battle the Mercenary Guild across the galaxy after Earth falls, facing overwhelming odds and fighting for survival.
Fantasy, apocalypse, sword and sorcery, and magic filled collections with heroes, dragons, and dark sorcerers.
Jon R. Osborne is the author of The Milesian Accords series which currently consists of 6 novels. The Milesian Accords series started in 2017 with the novel A Reluctant Druid. The most recently released novel in The Milesian Accords series was House of Owls which was released in 2025. There are no upcoming novels for The Milesian Accords series.
Jon R. Osborne has also written The Phoenix Initiative series which has 17 books including The Lyons' Pride and World Enders .
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Home » Authors » Jon R. Osborne List of Books
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