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.

Ryan doesn’t remember much about his life before becoming 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. But Ryan quickly learns being a darkness dungeon isn’t all loot and bone puns.

The usual result of a human taking a runaway semitruck head-on is a very sudden, very fast track to the pearly gates. But for one newly noncorporeal man, there's another option: become a dungeon. Feeling sorry for the desperate angel assigned to him, the man relents. Heck, if it doesn't work out, he can always chat with Saint Peter about it later. Next thing you know, he's a dungeon. Admittedly, a small run-down, somewhat unimpressive dungeon (more of a house, actually), but you gotta start somewhere, right?

Death came on swift wings. A soul, blessed by a goddess, falls to the land and enters his new life. He clings to a single memory, the defining moment of his previous life. Now he learns how to succeed in his new life as a new dungeon heart. To become the best dungeon he can be, he partners with the one existence all dungeons need: his bonded dungeon pixie.

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.

Daxas has established his dungeon in the Proving Grounds and incorporated two more into his sphere of influence. But his expansion and rule-breaking doesn't end there. His successes have been impressive, but thus far, he has been competing against the other minnows in the Proving Grounds. Other, grander forces, have taken notice and the interfering Divine Lords continue in their campaign to see Daxas destroyed. Daxas will have to think bigger, fighter harder, and cheat in ever more inventive ways if he and his growing pool of desirable disciples are to emerge victorious.

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. 

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.

For decades, the governments of our world have been fighting a desperate and secret battle to keep hordes of alien invaders away from our planet. When the guardian of the United States falls, a new champion must be chosen. Sadly, the choice of a champion isn’t ours to make, and the Galactic Conflict Authority selects a human, seemingly at random, to lead the United States of America’s efforts at holding back the tide.

After more than 700 years, he was expecting a peaceful and lonely end to his long life. That, however, was not meant to be. A single choice changed his fate, and his soul was forced to live again as a dungeon. Reborn but shackled to the heart of a mountain. This old soul has lost everything - and more. In a world of gods and demons, there is no room for a weak newborn dungeon. The path may be long and dangerous, but with a soul hardier than stone and a will stronger than iron, will he be able to forge his own destiny?

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.

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.

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.

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.  

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.