Titus Briggs is an Earth Defense soldier, a grunt, a decorated war hero—it's all he's ever known. So when a career-ending injury leaves him lying in a hospital bed, missing both legs, he struggles to accept his new reality. He can no longer walk, which means he can no longer fight. That is until a mysterious colonel arrives and offers Titus the opportunity to step into a new kind of war, a new kind of fight. To become a new kind of soldier. Mobile Combat Suits—MOCOMS—represent the next stage in human warfare. They enable soldiers to fight like never before.

Get ready to experience two more origin stories in the Backyard Starship universe.

For centuries, mankind has searched for nonhuman civilizations in the cosmos. These lost alien societies have finally been discovered—but they were destroyed long ago. Devin Starn starts off as a lowly rock rat aboard Borag, a mining ship working the dangerous end of the asteroid belt. Slowly, he gains prestige and purpose. When an alien base is uncovered, however, he must risk everything to protect his ship and her crew. What wiped out all the civilizations that came before humanity?

A company of Army Rangers is sent on an interstellar colony ship to secure a foothold on a dangerous, alien planet through violence of action. Leaving behind a warring Earth flung headfirst into a conflict of mutual assured destruction, the Rangers and the accompanying crew of first colonists are guided on a 40-year journey by an unprecedented artificial intelligence. But when they emerge from the frigid embrace of cryosleep, they awake to a nightmare, finding themselves greeted by the same ruthless enemy that brought about the ruin of Earth.

A secret buried in the Antarctic. A puzzle unsolved for thousands of years. And a Brooklyn-born master gunnery sergeant who's royally pissed that he has to babysit the researchers sent to figure it all out. But when Patrick "Wic" Finnegan finally sees what the team has uncovered, he can't believe his eyes, nor is he prepared for the violence to come. Soon, the portal opens and unleashes a storm of unbridled fury upon humanity.

Idealistic Navy Lieutenant Jacob Grimm just wanted to honor his mother’s sacrifice in the last great war. When he’s forced to return fire and destroy a squadron of ships to save his own, he thinks he’s the hero...until they discover the ships are full of children. Disgraced and denied promotion, Jacob’s career is over. That is until the head of ONI needs a disposable officer to command a battered destroyer on the rim.

In the 20th century Earth sent probes, transmissions, and welcoming messages to the stars. Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn't the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers....

Convicted of a minor traffic violation, Rev Pelletier is conscripted into the Perseus Union Marine Corps...for up to a 30-year term of service. Anxious to get back to his civilian life and job, Rev opts for a shorter term as a Marine Raider taking the fight to the enemy. But with extremely high mortality rates, can he and his friends survive until their term of service is over?

Humanity is on the brink of annihilation. Only one man can turn the tide. For centuries, we explored the stars and settled new worlds. But a mysterious alien threat emerged, launching devastating attacks and seizing entire star systems. Every fifty years they come, silent and relentless, before disappearing again into the dark. And as they close in on humanity’s home worlds, one more defeat could mean total extinction.

Two centuries after the Confederation staved off an invasion by the robotic Locusts, Captain Jack Romanoff faces mandatory retirement from an ever-shrinking navy. Actions speak louder than words. The Confederation doesn’t think the Locusts are coming back. But what if the politicians are wrong?

Born on a forsaken desert planet, Cole Shaw has two options - perish from starvation and disease, or enlist in the New World Republic’s armed forces. He chooses the military. For the first time, he thinks he has a shot at a better life. But survival is not guaranteed. Leading an elite team of mech operators, he is deployed to a frozen planet called Ferrous where dangerous relics of a past war lurk beneath the ice and savage creatures prowl the barren wastelands. Scientists on Ferrous are chasing rumors of godlike technologies buried in the ruins of a long-extinct civilization.

My name is Kazimir Wolfe. People call me "Kaz", except they don’t. I never use my real name; it’s too dangerous, for me and for anyone I meet. I’m on the run from the law, who think I killed my aunt, and from whoever did kill her, because they want to finish the job. So, I move around a lot, working construction or whatever job I can find. It’s a lonely life. I don’t let anyone get close...people who get close to me end up dead. Why? I’m a wizard. The world’s only wizard, as far as I know.

We were fighting on the wrong side of a war we couldn't win. And that was the good news. The Ruhar hit us on Columbus Day. There we were, innocently drifting along the cosmos on our little blue marble, like the native Americans in 1492. Over the horizon come ships of a technologically advanced, aggressive culture, and BAM! There go the good old days, when humans only got killed by each other. So, Columbus Day. It fits. When the morning sky twinkled again, this time with Kristang starships jumping in to hammer the Ruhar, we thought we were saved.

When the Ornu came, they took Earth in a single night. Humanity never stood a chance. Now, they force us to crew their ships and fight their wars for them. They hold Earth hostage, and if we refuse to do their bidding, they’ll lay waste to our precious blue marble. Slaughtering the billions who live there. But when Captain Bill Henderson is sent to claim a small moon for his masters, he finds something they never accounted for. An ancient warship – a behemoth abandoned for millennia by a species that reached its peak at the dawn of the universe.

The Galahad, a faster-than-light spacecraft, carries 50 scientists and engineers on a mission to prepare Kepler 452b, Earth's nearest habitable neighbor at 1400 light years away. With Earth no longer habitable and the Mars colony slowly failing, they are humanity's best hope. After 10 years in a failed cryogenic bed - body asleep, mind awake - William Chanokh's torture comes to an end as the fog clears, the hatch opens, and his friend and fellow hacker, Tom, greets him...by stabbing a screwdriver into his heart. This is the first time William dies.