Fight, survive, adapt, and rely only on yourself. That is Derek’s creed and what's got him through the System Integration on Earth. Everything changed when the System came. Cute bunnies and beautiful butterflies became savage killing machines. Then the Invaders arrived with a single goal: to obtain ownership of this new habitable planet. War has raged ever since. None of this mattered much to Derek, aside from making living a little more perilous.

Jeb Trapper tried to kill himself. The gun jammed. Two months later, the vet is now participating in underground trials of ecstasy to treat his PTSD. Everything seems to be going great until Jeb is teleported into a tutorial, along with everyone else on Earth. Now, he has to choose the level of difficulty. There's just one problem: He's high as a kite, and nothing seems impossible.

A world on the precipice of the apocalypse. A secret forged in the flames of war. A chance to start over. For John Sutton, only one of those three things matters. Retired from a decade of brutal war, he wants nothing more than a quiet pastoral life while he does his best to stem the steady increase of his Doom Points before they hit 100, signaling the start of the end. He’s been given a small farm on the outskirts of the empire as a thanks for his service, but no matter how far he travels, it's impossible to escape the war's devastating effects on the world.

Michael finds himself in the realm of the Forever Kingdom, with no memory of how he got there and who he is. Even so, he must participate in the Grand Game and forge a new destiny for himself. Dropped into a dungeon of monsters and strange magics, would you survive in a game where to lose means death? Alone, and with little more than his wits to aid him, Michael must advance as a player, slay his foes, and gain experience. All while navigating the intrigues around him and discovering his purpose.

Felix's life on Earth had become a series of dead-end jobs, ruined relationships, and rotating apartments smaller than most postage stamps. By all accounts, even his own, he was a coward. Too afraid to move forward, to take risks. Yet when given the chance to choose between risking his life or walking away from a deadly encounter, he didn't hesitate. Moments before his untimely demise, Felix was snatched from earth and thrust into a magical world known only as "The Continent". Empowered by the "System", he learns that he can strengthen himself through combat and dedication.

This collection contains the first three books in the Underworld series: Level Up or Die, Through the Belly of the Beast, and Sanctuary. Elorion has just finished a VR gaming session to find a monster waiting for him. With nineteen other students who have also been kidnapped, he is now subject to the whims of a thousand-year-old succubus and must survive deep under the earth in the lost realm of the Underworld. Gifted with the ability to use magic and advance in power, he is given an ultimatum: Level up or die.

Due to unusual circumstances, Randidly starts in an isolated dungeon far beyond his level, forced to rely on the mysterious Traveler Shal in order to learn and survive with the dangerous new status quo for his world. But survive he does, only to leave the dungeon and discover that while he experienced several hellish months in the dungeon, only half a day passed on Earth. Randidly's capabilities are now more than enough to help build a small enclave of survivors, but that doesn't mean balancing his sense of responsibility against the plots of an unfriendly town will be easy.

Jason logs into Awaken Online fed-up with reality. He's in desperate need of an escape, and this game is his ticket to finally feeling the type of power and freedom that are so sorely lacking in his real life. Awaken Online is a brand new virtual reality game that just hit the market, promising an unprecedented level of immersion. Yet Jason quickly finds himself pushed down a path he didn't expect. In this game, he isn't the hero. There are no damsels to save. There are no bad guys to vanquish.

Matt's just an ordinary guy, but when he's beaten, robbed, and left for dead, bleeding out at the bottom of a gully, it all has to change as he grasps frantically at his only chance for survival, coming as it does in the form of a glowing, dangerously pulsing light. With his reality forever altered, Matt must quickly find a suitable place to deploy the Dungeon Core, fighting his way through the hundreds of people between him and safety, because if he doesn't do it soon, a Core Detonation will solve all of his problems for him....permanently.

The decision to start a new life is never an easy one, but for Joe the transition was far from figurative. Becoming a permanent addition to a game world, it doesn't take long to learn that people with his abilities are actively hunted. In fact, if the wrong people gained knowledge of what he was capable of, assassins would appear in droves.

Keras Selyrian is already well on the way to cutting his name into the annals of legend. He’s fought false divinities, thieving sorcerers, and corrupt demigods - and left them defeated in his wake. But he’s a long way from home, and Kaldwyn offers a different brand of danger than he’s used to. He’s already got a sword of unfathomable power, but it’s damaged and leaking world-annihilating mana, so he’s in the market for a new one. Possibly six. The more the better, really.

Matt plans to delve the rifts responsible for the monsters that destroyed his city and murdered his parents. But his dreams are crushed when his Tier One Talent is rated as detrimental, and no guild or group will take him.

It's Ruwen’s Ascension Day, and he finally dies for the first time. His newly revived body can learn Spells and Abilities for the Class given him by the Goddess Uru, and dying is no longer permanent. Ruwen’s high intelligence makes becoming a Mage inevitable. With his new powers, he will locate his parents and clear their family name. But nothing goes as Ruwen imagined, and when a rival God tries to kill Ruwen shortly after his disastrous Ascension, his focus turns from his future to just surviving.

Luke is an apprentice leather worker, training with his family to one day take over the business. He and his friends Andre, Taylor, and Zed have known each other forever, and swear that nothing will ever tear apart their friendship. Then the Royal Decree comes. With the Dynasty of Dogs invading, and strange monsters appearing in the Hollow Kingdom, a draft has been implemented. Everyone 17 or older is required to be tested for "Potential". If they have it, they will join the mysterious and renowned Ascender Corps. If not, they will be drafted into the Legion as a forced recruit.

Silas is inducted into the System, becoming the last in a long line of Earth's "forerunners." The rewards are great, but the danger is greater. We are not alone in the universe. The fate of five worlds hangs on how their forerunners perform. Will Silas have what it takes to win Earth a place in the multiverse? Or will Earth become another mining world stripped of all resources and left a barren husk floating in the cosmos?