Millions of dungeons inhabit the planet, utilizing the Human people as a source of much-needed Mana to facilitate their own growth; in turn, the humans delve into the dungeons to acquire their own power in the form of Essence, which allows them to develop and enhance themselves in a multitude of different ways. It is a symbiotic relationship that has lasted thousands of years and has brought about a measure of peace.

Marstin Hardgrove was orphaned at a young age, forced to live on the streets, and needed to turn to thievery to survive. When a job goes wrong and the young man was caught, he was forced to eat a handful of dirt and rocks before being abandoned to die; unbeknownst to Marstin, he also ended up swallowing a tiny dungeon crystal.

Milton Frederick was originally abducted from his apartment to help defend one batch of pacifistic aliens called The Collective against another set of homicidal aliens called Heliothropes...but he never quite made it that far. Instead, during the process where his human consciousness was ripped from his body and inserted into a massive metal contraption called a Station Core, the ship that he was being transported on blew up and he was sent hurtling through space.

Larek Holsten is different from most people living in the Kingdom of Androthe, where his seven-foot-tall frame is looked at with suspicion and anger from its shorter residents; but as long as it helps him become the best Logger he can be, he doesn’t let it bother him all that much. He and his best friend, an axe with a powerful Fusion that causes it to become sharper and stronger than a normal tool, are feared by the trees in the magical forest north of his home, as he can fell the quickly growing monoliths faster than anyone else in the community.

All that Tacca GloomLily ever wanted to be since she was very little was a fairy assistant to a Dungeon Core. After her negatively portentous birth, however, she was never fully accepted by her superstitious peers and instructors at the Dungeon Assistant Preparatory School. Nevertheless, she persisted in her studies and graduated at the top of her class. Unfortunately for her, the “hands-on” training she was supposed to receive from a mentor and his bonded Dungeon Core didn’t go the way she would’ve hoped.

It was a day like any other when suddenly the world changed. The universe reached a threshold humanity didn’t even know existed, and it was time to finally be integrated into the vast multiverse. A place where power is the only thing anyone can truly rely on.

Zac was alone in the middle of the forest when the world changed... The whole planet was introduced to the multiverse by an unfeeling System... or God. A universe where an endless number of races and civilizations fought for power and dominion. Zac finds himself stuck in the wilderness surrounded by deadly beasts, demons, and worse. Alone, lost and without answers, he must find the means to survive and get stronger in this new cut-throat reality.

Thousands of Heroes protect the land, defending against the periodic incursions by gigantic monsters known as World Threats. This was the way it had always been and Clay Shuntwise was perfectly fine with that. Running deliveries for his family’s shop in the sleepy town of Renton, the young teenager barely even thought about Heroes and their role in keeping the world safe. That was, at least, until a World Threat came crashing down on him.

After his parents died, Alex Roth had one desire: become a wizard. Through hard work, he was accepted into the University of Generasi, the world’s greatest academy of wizardry.... Fate, however, had another plan. On his 18th birthday, he is Marked by prophecy as one of his kingdom’s five Heroes, chosen to fight the Ravener, his land’s great enemy. But his brand is "The Fool". Worst of the marks.

Elmer Robbins loved decorating for every holiday with his wife, Mary, by going all out with décor at their cozy little house as well as filling his office with holiday cheer. But when his beloved Mary passed away unexpectedly the year before, it was difficult for Elmer to summon the same sort of enthusiasm in decorating for all of the holidays without her beside him.

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.

It’s not easy making the career jump from office-supplies-store middle manager to heroic interdimensional adventurer. At least, Jason tries to be heroic, but it's hard to be good when all your powers are evil. He’ll face off against cannibals, cultists, wizards, monsters...and that’s just on the first day. He’s going to need courage, he’s going to need wit, and he’s going to need some magic powers of his own. But first, he’s going to need pants.

Throughout the Kingdom, Defenders constantly fight against incursions of dungeon monsters rampaging over the border the Kingdom shares with the Wildlands. To keep the danger to their citizens low, they periodically sweep through these untamed areas filled with natural beasts and roaming dungeon monsters, destroying as many Dungeon Cores as they can find. Tempara was practically a newborn when Defenders from the Kingdom snatched her away, only to be forced to watch in horror as tragedy fell upon the rest of her pack.

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 1 Talent is rated as detrimental and no guild or group will take him. Working at a nearby inn, he meets a mysterious and powerful couple. They give him a chance to join the Path of Ascension, an empire-wide race to ascend the Tiers and become living legends. With their recommendation and a stolen Skill, Matt begins his journey to the peak of power. Maybe then, he can get vengeance he seeks.

This trilogy contains the books: Dungeon Player, Dungeon Crisis, and Dungeon Guild. Join Devin and Krista as they embark on a journey to explore the newest full-immersive, virtual-reality massively multiplayer online role-playing game, Glendaria Awakens! Their experience soon turns grim as they are put in charge of running their own dungeon in the game. Now they must figure out how to survive waves of players trying to steal their Dungeon Core, all the while dealing with psychotic Dungeon Guardians and powerful guilds.

Milton Frederick was originally abducted from his apartment to help defend one batch of pacifistic aliens called The Collective against another set of homicidal aliens called Heliothropes...but he never quite made it that far. Instead, during the process where his human consciousness was ripped from his body and inserted into a massive metal contraption called a Station Core, the ship that he was being transported on blew up and he was sent hurtling through space.

Milton Frederick never had the chance to live out his life as a professional gamer on Earth, mainly because he was abducted by aliens. Unfortunately, he wasn’t returned home after the typical probing associated with such things to tell an unbelievable story to his friends. Instead, he was summarily killed, and his consciousness was inserted into a Station Core, a giant metal egg-shaped object that could use technology to create traps, Combat Units, and other defenses to protect not just himself, but those he cared about.

All that Tacca GloomLily ever wanted to be since she was very little was a fairy assistant to a Dungeon Core. After her negatively portentous birth, however, she was never fully accepted by her superstitious peers and instructors at the Dungeon Assistant Preparatory School. Nevertheless, she persisted in her studies and graduated at the top of her class. Unfortunately for her, the “hands-on” training she was supposed to receive from a mentor and his bonded Dungeon Core didn’t go the way she would’ve hoped.

Millions of dungeons inhabit the planet, utilizing the Human people as a source of much-needed Mana to facilitate their own growth; in turn, the humans delve into the dungeons to acquire their own power in the form of Essence, which allows them to develop and enhance themselves in a multitude of different ways. It is a symbiotic relationship that has lasted thousands of years and has brought about a measure of peace.

Against his will, Thaden was transported elsewhere in a big flash of light along with millions of other Humans from Earth, to a place where they would train to become Contenders in a whole new world. Unfortunately for him, something occurred during his transference into the “Training” program, and he was ejected from the whole training process and sent into the open mouth of an active volcano for bodily disposal.

Larek Holsten is different from most people living in the Kingdom of Androthe, where his seven-foot-tall frame is looked at with suspicion and anger from its shorter residents; but as long as it helps him become the best Logger he can be, he doesn’t let it bother him all that much. He and his best friend, an axe with a powerful Fusion that causes it to become sharper and stronger than a normal tool, are feared by the trees in the magical forest north of his home, as he can fell the quickly growing monoliths faster than anyone else in the community.

Kai was the least likely young man to ascend. Raised on his uncle’s potato farm, he began his career as an adventurer with empty pockets and little skill. But a foolish attempt to prove his bravery leads Kai to unlock hidden power within himself and acquire a most unlikely ally. After setting aside a promising career in the army to pursue the Path of the Bleeding Tiger, Rhona sets out to stop a war and seek atonement for the past. When Bancroft the Earth Core awakens, he can’t wait to begin building things anew. But a recovered item from his past reminds him that more is at stake.

The Earth is changing. The alien invasion brought social upheaval, advanced technology, and an armada of peacekeeping robots. But Alan, a college student pursuing a now-useless degree, cares little about all of this. He has only one thing on his mind: the Game. A fully immersive virtual reality, the Game appears to be a major part of the invading civilization. Alan can't wait to play, recklessly diving into the digital universe. Soon though, Alan realizes the Game is anything but simple, and the stakes are higher than he ever imagined.

He was given another chance at life and from the infinite possibilities available, he chose to come back as a mechanical man, a Metalman, named Repair. Now he has to contend with a research lab full of gnomes who say he owes them for bringing him back from death, a strange city that is going through a magical industrial revolution, and adversaries that want to see him broken into pieces.

After quitting her job as a therapist, Tess's life became pretty slow. A tad boring, even. It thus came as no small shock to her when she was chosen by a god. Suddenly thrust into a new world where magic, monsters, and character levels are par for the course, Tess will find that simply surviving can be a challenge. It doesn't help that dark forces are stirring, she's woefully underpowered, and spiders keep trying to claw her face off.

Cadence was born with a previously unknown disability that disrupted the some of the signals her brain sent to her vocal cords and hands, preventing communication through her voice or even through sign language. Despite that, she learned to communicate through writing and, when its use became more prevalent, text messaging.

Hall had played the VRMMORPG Sky Realms Online since beta. During one gaming session, a freak accident traps Hall and other players in the game. They awaken to find out their bodies are comatose and that they have been downloaded fully into the virtual world. Even worse, the rules have changed, they've been forced back to level one, and permadeath might be possible.

Although he was once the promising young CEO of a successful corporation, Lucas abandoned everything he knew and retreated from both the real world and his demanding life following a horrific accident. In order to cope with tragic loss, he began spending his time in virtual reality, lazing about in the sun, and living a carefree life. When he learns that his escapist paradise is being threatened and is about to disappear, however, Lucas is once again forced to take action and do what he does best: take charge.

This is it, the day I take over my father’s adventuring shop! Set at the base of Gianskarl mountain, where lies a vast and mysterious dungeon, this is the perfect spot. Many adventurers come to try their hand at the Karl in the hopes of hitting it big. And it’s up to me now to sell them the equipment they’ll need to face the dangers that await them. But where my father was content selling trinkets for a pittance, I want to turn this modest shop into the industry leader.

One moment, everything was normal. Then the World Core woke up and slaughtered almost everything alive so it could harvest their Chi. After that, it rebuilt everything and put the survivors in a game-like environment, pitting them against monsters and each other. The rules are different now. Chi power is as important as being able to fight.