Invasion (The Alien Wars Book 1) FREE by Paul Moxham: The world ended on a Tuesday. Nobody saw it coming. The Alien Wars follows Logan Pollack and his brother Kenneth through a post-invasion Earth — a world that is still recognisable but fundamentally broken, occupied by an alien force called the Seods, and full of ordinary people trying to survive something they were never built to survive.

This book is Free on April 18, 2026

Parallax (The Deep Black Book 1) FREE by James David Victor: In the deep black of space, there are no rules. Only pirates. And Rangers. Captain Drummond Bayne is both, and he might be the savior of the galaxy... if he doesn't destroy it first.

This book is Free on April 15, 2026

They Will Be Coming for Us (The Jovian Universe Book 1) FREE by Kim Catanzarite: Read the epic story Amazon reviewers are calling "A wild and harrowing tale!" This five-book series begins with a young woman who meets and quickly marries a charismatic astronomer named Andrew Jovian. Little does she know she has become the key to an extraterrestrial’s family prophecy. "No one's doing it like Catanzarite"—IBR (Starred Review).

This book is Free on April 7, 2026

Moon Detective: The Jacques Dubois Mysteries (The Outer Earth Mysteries Book 1) FREE by J.W. Holmes: On Alpha Colony, the premier human settlement on the Moon, follow Detective Jacques Dubois as he and his new partner Cornelia "Corny" Stevenson do their best to keep the colony and its residents safe in these seven cosy adventures filled with action and mystery!

This book is Free on April 2, 2026

The Exodus Rush (The Vethrak Requiem Book 1) FREE by Justin Wilson: Humanity survived the invasion. That was never the endgame. Twelve years after the Vethrak shattered Earth’s defenses and vanished without explanation, humanity is rebuilding in the shadows of its own near-extinction. The official story says the enemy is gone. The truth is far worse.

This book is Free on April 1, 2026

Flaws of Decency (Voss's Vipers Book 1) FREE by Robert Iannone: He was the prince meant to be forgotten—Darken Voss, the spare heir trained for ceremony, not war. But when a pirate siege shatters planetary peace and takes the one person he loved, Voss must become lethal. Grief sharpens him. Strategy defines him. And from the wreckage rises a leader who earns command not by birthright, but by blood.

This book is Free on March 21, 2026