Doom Star Books in Order

Marten Kluge and Omi need to refuel their stolen shuttle at Mars before reaching Jupiter. A planned battle involving Highborn warships, a human fleet and cyborg forces puts their escape route in deadly danger.

The Highborn want to capture Earth's experimental beamship. Marten Kluge and his fellow soldiers ride inside missile nosecones, preparing to cross its defenses and board it before the vacuum of space kills them.

Genetically engineered Highborn soldiers turn against humanity and attack Earth. Marten Kluge escapes a re-education camp only to enter military service, caught between oppressive rulers and superhuman conquerors who consider ordinary people obsolete.

Marten Kluge reaches Jupiter hoping to find safety, but cyborg infiltration has already begun. A society divided by rigid rules and demands for freedom becomes the setting for a battle that forces him into difficult choices.

Armed asteroids race toward Earth as cyborg forces threaten to wipe out humans and Highborn alike. Marten Kluge arrives with a meteor-ship and veteran marines, drawn into the effort to stop the approaching destruction.

Cyborg forces prepare to conquer the Solar System while human and Highborn leaders undermine one another. Trapped on Earth amid a growing civil war, Marten Kluge learns a secret that could change the struggle.

Space Marine sniper Mule survives a disastrous expedition to the Oort cloud. Stranded on Tyche with hostile cyborgs and no nearby reinforcements, he must rely on his skill and judgment to keep Earth's future from collapsing.

Marten Kluge dispatches Task Force 7 on a three-year voyage to the cyborgs' hidden Oort Cloud base before they can escape and rebuild. A trap awaits the force, leaving its Space Marines facing a desperate assault on the icy surface.