An original novel set in the Halo universe—based on the New York Times bestselling video game series! October 2559. With the galaxy in the suffocating grip of a renegade artificial intelligence, another perilous threat has quietly emerged in the shadows: the Keepers of the One Freedom, a fanatical and merciless Covenant splinter group, has made its way beyond the borders of the galaxy to an ancient Forerunner installation known as the Ark. Led by an infamous Brute named Castor, the Keepers intend to achieve what the Covenant, in all its might, failed to: activate Halo and take the last steps on the path of the Great Journey into transcendence. But unknown to Castor and his new, unexpected ally on the Ark, there are traitors to the cause in their midst—namely the Ferrets, composed of Office of Naval Intelligence operative Veta Lopis and her young team of Spartan-IIIs, who have been infiltrating the Keepers to lay the groundwork for Castor’s assassination. But with ONI’s field operations now splintered and cut off by the Guardian threat, Veta’s original mission has suddenly and dramatically escalated in scope. There’s simply no choice or fallback plan—either the Ferrets somehow stop the Keepers or the galaxy faces an extinction-level event….

"Based on the bestselling video game for Xbox."

An original full-length novel set in the Halo universe and based on the New York Times bestselling video game series with the latest entry, Halo Infinite, out in 2021! October 2559. With the galaxy in the suffocating grip of a renegade artificial intelligence, another perilous threat has quietly emerged in the shadows: the Keepers of the One Freedom, a fanatical and merciless Covenant splinter group, has made its way beyond the borders of the galaxy to an ancient Forerunner installation known as the Ark. Led by an infamous Brute named Castor, the Keepers intend to achieve what the Covenant, in all its might, failed to: activate Halo and take the last steps on the path of the Great Journey into transcendence. But unknown to Castor and his new, unexpected ally on the Ark, there are traitors to the cause in their midst—namely the Ferrets, composed of Office of Naval Intelligence operative Veta Lopis and her young team of Spartan-IIIs, who have been infiltrating the Keepers to lay the groundwork for Castor's assassination. But with ONI's field operations now splintered and cut off by the Guardian threat, Veta's original mission has suddenly and dramatically escalated in scope. There's simply no choice or fallback plan—either the Ferrets somehow stop the Keepers or the galaxy faces an extinction-level event....

A Master Chief story and original full-length novel set in the Halo universe—based on the New York Times bestselling video game series! 2526. It has been more than a year since humanity first encountered the hostile military alliance of alien races known as the Covenant, and several weeks after the United Nations Space Command’s devastating counterattack of Operation: SILENT STORM was deemed an overwhelming success. The UNSC has put its faith in the hands of the Spartans, led by the legendary Master Chief, John-117: enhanced super-soldiers raised and trained from childhood via a clandestine black ops project to be living weapons. But the Covenant—enraged and fearful of their enemy’s unexpected strategies and prowess—is not taking its recent defeat lightly, and is now fully determined to eradicate humanity from existence, brutally overrunning the ill-fated planets of the Outer Colonies faster than retreats can be ordered. If the UNSC has any chance of stemming the tide of the war, the Master Chief and Blue Team must drop onto an empty, hellish world in order to capture a disabled Covenant frigate filled with valuable technology. It has all the makings of a trap, but the bait is far too tempting to ignore—and this tantalizing prize is being offered by a disgraced and vengeful Covenant fleetmaster, whose sole opportunity for redemption lies in extinguishing humanity’s only hope of survival…

An original full-length novel set in the Halo universe and based on the New York Times bestselling video game series! August 2558. Rion Forge was once defined by her relentless quest for hope amidst the refuse and wreckage of a post-Covenant War galaxy—years spent searching for family as much as fortune. But that was before Rion and the crew of her salvager ship Ace of Spades encountered a powerful yet tragic being who forever altered their lives. This remnant from eons past, when the Forerunners once thrived, brought with it a revelation of ancient machinations and a shocking, brutal history. Unfortunately, the Ace crew also made dire enemies of the Office of Naval Intelligence in the process, with the constant threat of capture and incarceration a very real possibility. Now with tensions mounting and ONI forces closing in, Rion and her companions commit to this being’s very personal mission, unlocking untold secrets and even deadlier threats that have been hidden away for centuries from an unsuspecting universe....

USA TODAY BESTSELLER A Master Chief story and original full-length novel set in the Halo universe—based on the New York Times bestselling video game series! October 2559. It has been a year since the renegade artificial intelligence Cortana issued a galaxy-wide ultimatum, subjecting many worlds to martial law under the indomitable grip of her Forerunner weapons. Outside her view, the members of Blue Team—John-117, the Master Chief; Fred-104; Kelly-087; and Linda-058—are assigned from the UNSC Infinity to make a covert insertion onto the ravaged planet Reach. Their former home and training ground—and the site of humanity’s most cataclysmic military defeat near the end of the Covenant War—Reach still hides myriad secrets after all these years. Blue Team’s mission is to penetrate the rubble-filled depths of CASTLE Base and recover top-secret assets locked away in Dr. Catherine Halsey’s abandoned laboratory—assets which may prove to be humanity’s last hope against Cortana. But Reach has been invaded by a powerful and ruthless alien faction, who have their own reasons for being there. Establishing themselves as a vicious occupying force on the devastated planet, this enemy will soon transform Blue Team’s simple retrieval operation into a full-blown crisis. And with the fate of the galaxy hanging in the balance, mission failure is not an option…

An original digital-first enovella set in the Halo Universe and based on the New York Times bestselling video game series! Find. Claim. Profit. In a post-war galaxy littered with scrap, it’s the salvager’s motto. And with a fast ship and a lust for adventure, Rion Forge has certainly made her mark on the trade. When the discovery of a wrecked UNSC cruiser brings Rion’s past back to haunt her, stirring fresh hope into a decades-old wound, she’s hell-bent on finding answers: What really happened to her father and his ship, the Spirit of Fire? This digital-first enovella also contains the complete text of Kelly Gay's short story “Into the Fire,” originally featured in the collection Halo: Fractures.