Mecha arena combat, brutal sieges of sky and space, hidden alien genetic machinations, and spacefleets-in-exile feature in this week’s list of science fiction’s newest releases.

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Captain Henry Gallant (The Henry Gallant Saga #5) – H. Peter Alesso

Henry Gallant is the captain of the spacecraft carrier Constellation. He is the last hope of the Marines stranded on a volcanic wasteland nine light-years from Earth.

Not since Guadalcanal has the 2nd Marine Division faced a grimmer struggle to hold on against a powerful and ruthless enemy.

As the Titan invaders close in, the Marines wonder if there is the ‘will’ to save them.

Top Gun pilots Rob Ryan and Lorelei Steward take a desperate gamble to save Nathan Steward and the remnants of the 2nd Division.

Will they be in time?

Will they be enough?

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Crest of the Stars: The Return to Strange Skies (Crest of the Stars #3) – Hiroyuki Morioka

Sparks continue to fly as the proud Abh Empire and the zealous United Humankind clash over the fate of planet Clasbule, and of the entire Milky Way, in this, the epic conclusion to Crest of the Stars.

Can Jinto and Lafier elude the enemy’s concerted efforts to capture them? Can they trust the strange bedfellows that are their new “allies”? And with all odds against them, have they the sheer grit necessary to flee the thick of the fire and live another day in this internecine war? What does destiny have in store for them? Witness the end of an era, and the beginnings of a legacy like no other

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Defiance (Junctionworld #1) – Bear Ross

Bring out the mechs and fire up the chainsword. Ready. Fight!

Mech Pilot Jessica Kramer fights to survive in the armored arenas of Junctionworld, like her father and brother before her. She’s good, but not as good. If she ever hopes to be better, she’ll need to stop getting in her own way.

When she discovers the circumstances behind her famous brother’s death were more than just a result of the games, her path turns to vengeance. The deeper she digs, the harder the truth becomes, and the more sinister the plot to eliminate her as well.

Renegade cyborgs, inter-dimensional menaces, and the mysterious forces that destroyed her brother are closing in from every direction. Jessica needs to stay one step ahead or she’ll have one foot in the grave. And if she ever hopes to uncover the conspiracy against her family, she’ll have to overcome her personal demons first.

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The Earthling (Solders of Earthrise #1) – Daniel Arenson

Jon Taylor is an Earthling. He doesn’t care much about space. At least until his brother dies on Bahay, a war-torn planet many light-years away.

After the funeral, Jon joins the army. He learns to kill. And he flies to Bahay, sworn to avenge his brother.

Centuries ago, Filipino colonists arrived on Bahay to build a utopia. But this world has become a nightmare. Jon finds himself in a dizzying dreamscape, a world of dark jungles and neon slums, of ruthless guerrillas and intoxicating bargirls, of blood-soaked battlefields and glittering brothels. Here on Bahay, a man can lose his life in the jungle, lose his sanity in the gleaming drug dens, or lose his heart to a local girl with a sweet smile and knife behind her back.

On Bahay, nothing is as it seems. In this place of strange dreams and secrets, Jon hunts the man who killed his brother. But he learns that revenge always comes with a price…

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Finest Hour (The Exiled Fleet #1) – Richard Fox

The Exiled Fleet tried to escape the evil Daegon. They fled into a trap.

The last free Albion fleet finds temporary sanctuary over a friendly world, but when the Daegon invasion arrives, there is no escape for Commodore Thomas Gage and the last member of the royal family he’s sworn to protect.

With their backs to the wall, a glimmer of hope breaks through the besieging Daegon. Lady Christina, a possible heir to the throne arrives, but with her comes the question: Who has the right to lead Gage’s forces?

Amid the schisms opening in the chain of command, Gage will fight to protect young Prince Aiden from the obsessed hunter Tiberian, who has vowed to return the boy to occupied Albion…

Dead or alive.

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The Lost and the Damned (The Horus Heresy: Siege of Terra #2) – Guy Haley

The Solar War is over. The Siege of Terra has begun.

With the solar defences overcome through the devastating strength of the Traitor armada and the power of the warp, Horus launches his assault on the Throneworld in earnest. After withstanding a ferocious barrage of ordnance, an immense ground war commences outside the Palace with every inch gained paid for in the lives of billions.

As the Traitors unleash their deadliest weapons, the defenders of the Throneworld face nightmare and plague – but Terra must stand.

Discover the lengths to which Horus will go to claim Terra as his own – and the horrors he is willing to set upon its defenders.

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Renegade Alliance (Renegade Star #13) – J. N. Chaney

An ancient world holds many secrets.

With the Celestial ship Tartarus now under his command, the former Renegade known as Jace Hughes heads toward a lost colony in search of answers.

What he finds may change the war forever.

Meanwhile, the Celestials are drawing closer to locating Earth with every passing day. With an invasion looming, the Alliance has little time to prepare its forces.

The Union, Sarkonians, and Earth must unite together or die alone.

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Tomorrow’s People – J. Manfred Weichsel

Aliens are forcing humanity’s evolution!!!

Kidnapped by gray skinned aliens, Joseph is brought to a giant saucer at the edge of the solar system.

The aliens know that men like Joseph will resist them. They perform an experiment on him to see if men like him can be subdued. But deep inside, something of his old self remains. Will Joseph find it in time to save the human race?

With all the body horror and biting satire fans have come to expect from him, J. Manfred Weichsel delivers a dark, disturbing, and thought provoking weird sci-fi thriller that will keep you up at night long after you have finished reading.