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.

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.

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.

Lich is the newest Dungeon Core to grace the world. But he doesn’t conform to the usual four energy types—nor Air, nor Earth, nor Fire, nor Water. Instead, he is a Soul Core. Glimpses of his previous life haunt his dreams but offer clues to solving the mystery of his bizarre magical affinity. Memories of an undead city, burning light, and an order of terrible crusaders fill his thoughts.

Carl was a regular construction foreman. Not the worst, not the best, and definitely not the thinnest. Even so, he didn't deserve that heart attack! He really didn't deserve being reborn into a dog-eat-dog world as a dragon. To be fair, it’s nice to be at the top of the food chain. Now Carl just needs to learn how magic works, which monsters are safe to eat, and why his hoard is so important to him. Dealing with change is hard enough, but he has enemy dragons incoming, hostile environments, and foes constantly trying to get bragging rights by taking down a dragon.

Dorky, socially awkward entomology student Evelyn wakes up one morning to find herself as some sort of alien-human hybrid trapped on an unknown planet. Once the initial panic winds down, she quickly learns she's capable of producing more of herself: additional bodies all sharing one mind. Being well-versed in sci-fi tropes, she quickly resolves to not devour the planet and turn into an unflinching biological armada, and instead uses her new powers to try and help as many people as possible. Unfortunately, it turns out that helping people is often very, very difficult.

In the distant past, a time of magic and swordplay, there lived Harold, the mightiest lich of all, a master of arcane sciences, and a challenger of gods. After reaching the pinnacle of his power and finding it surprisingly bland, Harold waged a cataclysmic war against the gods, aiming to shatter the very system that confined him.

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. 

Ten years ago, Amelia woke up alone and lost in a broken world where she had to fight for her survival. Now, after reaching the pinnacle of power, defeating the Void itself, and escaping the abyss, she has finally found her way back into the real world. But instead of returning to Earth, she arrives in the land of Vacuos. A fantasy world with magic, monsters, Classes, and Levels. A world that is governed by a System like it were a video game.

Anthony has been reborn! Placed into the remarkable game-like world of Pangera. But something seems a little off... What's with these skills? Bite? Dig? Wait.... He's been reborn as a WHAT?! Follow Anthony as he attempts to adjust to his new life as an ant in his new Dungeon home. He'll have to learn how to survive, level-up, and grow both himself and his bite-sized colony into a force to be reckoned with.

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.

It was just supposed to be a quick trip to the pet store for some cat food, but the universe had other plans for Florence Valentine. Good for nothing kids and some annoying store employees were giving her a hard time, and then things got worse when she was killed by a delivery truck. Instead of angels, pearly gates, and eternal rewards, a voice in her head keeps telling her that she’s become a dungeon core, whatever that is.

I died and was accidentally reborn as an [angelic monstrosity]. So now I'm building a holy dungeon-tower that is tall enough to reach the gods...so that I can complain about it! But the humans think that I am trying to destroy the world.

I struggled every day, looking to put something on the table, but it was my life, and no one had a right to take it. Especially not Eris Lanyer, lord of the city, the very same who was supposed to keep people such as myself safe! The nobleman killed me without a second thought for the sole purpose of testing the blade he had just acquired! So here I am, burning with such a rage at this flagrant lack of justice. My hate is so immense that I'm unable to pass to the afterlife, and so I return as a Revenant.