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.

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.

When Kers is reborn as a dungeon core, he finds himself stuck in the most improbable of places: a cloud. High in the sky and far away from the usual solid resources, Kers must face the obvious question: How is a dungeon to build itself without wood or stone? Luckily, Kers has the sarcastic (and sometimes helpful) fairy Selena to help him get his bearings. Together, the pair delight in exploring Kers’ weird existence, creating novel mobs, and enticing adventures to plumb the lofty heights of his floors.

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.

After fulfilling the duty all Arch Necromancers are tasked with, the last thing Sylver Sezari expected was to be reborn. He was usually the one reanimating dead things, after all. How ironic. But reborn he was. And after crawling his way back into the land of the living, he finds himself in a strange land, a strange time, and with a strange floating screen in front of his new face. Either through plan or chance, he’s alive again, and planning to enjoy himself to his heart's content.

Alexandra Rousseau, an engineer from the European Federation Star Navy with a past darker than the void between the stars, is unexpectedly launched into hyperspace when an FTL jump goes horribly wrong. She wakes in a world of magic and monsters, encountering a mysterious Order with plans millennia in the making. When the Order makes a catastrophic mistake, transforming Alexandra into a dungeon core, they inadvertently give her the power to bring back technology long since thought lost in this world.

A soul from Earth awakens as Seventh Princess Adelheid of the Vuldar Empire. With a weak body but a monstrous reservoir of mana that threatens her very life, Adelheid engraves an oath into her very soul. She shall seize the throne at all costs, but with ambitious cousins and discontent nobles, her father and brother are far from her only rivals. Experience Adelheid's journey through victory and loss to achieve her deepest desires.

Matt is reincarnated as a Tree. Not just any tree, but an overpowered one in a fantasy world that serves as the battlefield for an ongoing conflict between demons and the heroes summoned to oppose them. But Matt can be a great tool against the evil forces. TreeTree (as Matt comes to be known) will learn all sorts of skills, gain levels, and in doing so, build up a forest, train young subordinates, protect a village, and more.

Ryan doesn’t remember much about his life before becoming a dungeon core. Only that he had a bit of a disagreement with the church—something to do with a beheading? Now reborn, Ryan begins to arm his darkness dungeon with devious traps, bestial zombies and ill-named skeletal creations, without doing anything too evil. Well, mostly. Some adventurers just deserve a stalactite to the head.

There is no weapon more powerful than the [Psychokinetic] mind. Astrid, a mischievous noble teen, long dreamed of exploring the ancient cities preserved beneath the waves, left behind from a time before the ocean swallowed the world. She's been training all her life to become a magic swordsman capable of doing just that. But when an ancient monster long thought dead assaults humanity's last bastion–a floating ship-city–she awakens her System early.

Pete is a simple man who enjoys a good drink amongst good friends. Not too much to ask, right? Now, he's trapped in a fantasy world far from home, stuck underground and inside the body of a smelly dwarf with fantastic facial hair. The worst part? The swill that the dwarves are falling all over themselves to drink. It's flat, it's watery, and it has the alcohol content of a rancid coconut. Can Pete save the dwarves from their own sour fate, or will he be forever doomed to plink his pickaxe away in hopes that he hits the motherlode?

Beneath the light of three moons, the world of Aster Fall lies shattered. Classes are broken, Outsiders are invading, and the future is unknown. The ancient guardians have left and no one knows where they have gone. The fate of the world lies with one young man. Sam Hastern. His family has been cursed by a broken class for the last fifty years. No one has ever managed to level it, condemning them to the lowest paying jobs and life in a barren village.

Zaria was just a normal woman, living a simple life—until demons burst through her door and ate her heart. Reborn from tragedy, Zaria rises from the ashes as a Core, but with a twist. A rare mutation has turned her into a Mutant Core, destined to explode unless she forms a bond with a human witch to become a Striga. Her mutation? Legs. With the power of a full dungeon compressed into a walking house that is her body, Zaria sets out on a journey to find her Striga and avoid detonation. Along the way, she battles demons, builds her dungeon, and feeds her mimic mobs.

After his town is put to the sword and the children are taken to replace the fallen, an old man is out for revenge. He’s ready to fail at the most difficult challenge in the world: cultivation. Too corrupted to even take the first steps, the sly old elder simply agreed with those who told him that it was impossible. Then he quietly ignored them, rubbed his hands together, and started anyway.

Newborn Dungeon Cores must choose what entity they help contain, and that choice determines what monsters they are able to summon. After being executed for crimes forgotten in death, Tira is given the chance to make that choice. Tira chose Acekorah, the Primeval Terror, a being so dangerous few cores will risk trying to contain it.

The Resistance is fractured. The remaining survivors are buckling under the might of the malicious Tyrant King. Enter Roark von Graf, hedge mage, lesser noble of Traisbin, and one of the last freedom fighters. Desperate and unhinged, Roark crafts one final attempt to overthrow the king. The plan goes awry, and Roark finds himself tumbling headfirst into an interdimensional portal. On the other side, he finds himself stranded in an unexpected place - an ultra-immersive fantasy video game called Hearthworld.

Ryan doesn’t remember much about his life before becoming a dungeon core. Only that he had a bit of a disagreement with the church—something to do with a beheading? Now reborn, Ryan begins to arm his darkness dungeon with devious traps, bestial zombies and ill-named skeletal creations, without doing anything too evil. Well, mostly. Some adventurers just deserve a stalactite to the head.

A visit to London’s Natural History Museum became a horror show as magic flooded Earth. Now, Thomas is entombed there as a Dungeon Core, with only the creatures on display available as minions. All over the globe, patches of land have been replaced by strange alien environments, containing not only monsters from myth and legend, but also humanity’s worst nightmares. Leviathans stir at the bottom of the ocean, dragons have reclaimed the skies, and shadows are once again something to fear.

When Kers is reborn as a dungeon core, he finds himself stuck in the most improbable of places: a cloud. High in the sky and far away from the usual solid resources, Kers must face the obvious question: How is a dungeon to build itself without wood or stone? Luckily, Kers has the sarcastic (and sometimes helpful) fairy Selena to help him get his bearings. Together, the pair delight in exploring Kers’ weird existence, creating novel mobs, and enticing adventures to plumb the lofty heights of his floors.

Alexandra Rousseau, an engineer from the European Federation Star Navy with a past darker than the void between the stars, is unexpectedly launched into hyperspace when an FTL jump goes horribly wrong. She wakes in a world of magic and monsters, encountering a mysterious Order with plans millennia in the making. When the Order makes a catastrophic mistake, transforming Alexandra into a dungeon core, they inadvertently give her the power to bring back technology long since thought lost in this world.

Blade & Sheath is a fully immersive VRMMORPG game where some folks complete quests, while others develop their magic and battle monsters. Then there are players like Josh. He needs to earn some cash, so when he gets a job as a town builder for Blade & Sheath, he can't believe his luck. However, it won't be easy. The land he needs to build on is as untamed as the critters that prowl it. That's not all—he also starts with no skills and no resources.

Being a small dungeon on the outskirts of town in the backwaters of an unimportant kingdom isn't easy, but Kelsey's done her best to level up and become the best dungeon she can be: Digging a hole of ever-increasing depth and complexity. Creating an undead atmosphere that would make a necromancer proud. Spawning monsters and treasure. Killing adventurers. But lately, things have gotten a bit stale.

Dungeons are a lot like sea turtles. They’re born in clutches of dozens, if not hundreds. A 100 may be born at one time, buried in still-burning cities, in forests where the canopy hides the sky, or in ocean trenches at the bottom of the sea. But, only one in a clutch ever makes it to the surface. Everyone knows about dungeons - monstrous factories that emerge out of the earth, full of riches and Arcana and power - and monsters.

Zaria was just a normal woman, living a simple life—until demons burst through her door and ate her heart. Reborn from tragedy, Zaria rises from the ashes as a Core, but with a twist. A rare mutation has turned her into a Mutant Core, destined to explode unless she forms a bond with a human witch to become a Striga. Her mutation? Legs. With the power of a full dungeon compressed into a walking house that is her body, Zaria sets out on a journey to find her Striga and avoid detonation. Along the way, she battles demons, builds her dungeon, and feeds her mimic mobs.

Spot was summoned from his comfortable charging pad and familiar floors to a world of magic and intrigue. But after the flight of his new patrons, he is left alone to care for a filthy castle. During his quest to keep this new home clean, Spot will face demons, foreign armies, and his arch nemesis, the dreaded stairs. All those who stand before him will be swept away. Those who follow his spotless trail will find enlightenment, purity, and a world on its knees.

Glenn Redwood has longed to become an Adventurer since he was a young boy, and has focused every waking moment since he turned 14 on leveling and growing stronger. Answering the challenge of the Gods of Luxtera, he has fought Monsters to prove himself again and again. He has earned the right to travel the world and protect its people... but the Gods have other plans. After they choose Glenn to become a Town Guard, he is charged with protecting his small town and everyone within.

Veos has quickly proved to be far more capable than your average Dungeon Core. In the eyes of his challengers, at least. He's instinctive and motivated, with a drive to craft an intricate story and create obstacles for all those who seek to explore what lies beneath Nerian-Silex. Though Veos is certainly an unusual dungeon, what truly sets him apart is unknown to most—even himself. But now he's stumbled upon intel about the realm's dark history that, if tampered with, could reawaken a horrific enemy.

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.

The system came. The apocalypse ended. Now new worlds have merged with Earth. For Bain Lee, it means leveling his Ocularist class beyond its previous limits. With this strange class and the ability to see into the inner workings of the system, he may find the magic skills needed to earn his redemption. Not only that, but he might discover the secret behind the system itself.