There are 9 books in the Forgotten Ruin series. The newest book is Sua Sponte which came out in 2025.

1
Forgotten Ruin

By Jason Anspach , Nick Cole ,

Book cover of Forgotten Ruin
Tolkien meets Shock and Awe


Orcs. Trolls. Wraith riders. Dark wizards. Together, they form an unstoppable force. Or so they thought.


Dark Army… meet the U.S. Army Rangers.


When a Joint Task Force of elite Rangers are transported to a strange and fantastic future where science and evolution have incarnated…

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2
Hit & Fade

By Jason Anspach , Nick Cole ,

Book cover of Hit & Fade
For the Rangers, the best defense is always… more offense.

As an overwhelming army of skeletons, wraiths, ghouls, and other dark creatures—all serving a powerful undead sorcerer—advance against Forward Operating Base Hawthorn, the Rangers must now do what they do best: go on the extreme offense.

It’s time to Hit…

3
Violence of Action

By Jason Anspach , Nick Cole ,

Book cover of Violence of Action
Speed, surprise, and aggression... Hit on Jackpot is go.

The scourge of the Savage Lands, an ancient dragon allied to a gathering storm of dark forces threatening the world of Ruin, becomes the next target of the most fearsome shock troops ever conceived, prepared, and trained for total war: U.S.…

4
Lay the Hate

By Jason Anspach , Nick Cole ,

Book cover of Lay the Hate
The War Begins…

The world of Ruin erupts into the flames of war as a great evil rises once more from the Tombs of Eternal Midnight. Werewolves and vampires march from the east, the orcs of Umnoth are on the move, and cities disappear beneath the boots of these savage…

5
The Book of Joe

By Jason Anspach , Nick Cole ,

Book cover of The Book of Joe
A Ranger is Forged.The next chapter in the war against Sût the Undying and the Nether Sorcerer unfolds against the backdrop of what it takes to become a U.S. Army Ranger.

The Rangers' next objective takes them on an odyssey of desperate survival and relentless combat through the Desert of…

6
Lead The Way

By Jason Anspach , Nick Cole ,

Book cover of Lead The Way
Breach Bang and Clear.The battle begins against the Lich-Pharaoh as the Rangers go for a fatal strike against the Saurian-controlled Port of Sûstagul in the Land of Black Sleep.

Brutal house-to-house fighting and relentlessly kinetic street battles erupt as special teams conduct high-value target raids against sorcerers, war chieftains, and…

7
Never Shall I Fail

By Jason Anspach , Nick Cole ,

Book cover of Never Shall I Fail

Surrender is not a Ranger Word

History records massive ancient battles at Carthage, Megiddo, and Cannae. Soon it will record an even greater one... at Sustugul.

Surrounded in the desert port of Sustugul, the Rangers and their new allies must fight a desperate defense. The legions of the Lich Pharaoh,…

8
High Value Target

By Jason Anspach , Nick Cole ,

Book cover of High Value Target
You can run, but you can't hide from U.S. Army Rangers

With the armies of the enemy smashed at the final battle for the desert port city, the Rangers return to their primary mission to do what they do best: eliminate a high-value target with extreme violence of action deep…