Regan Earle was a robotics scientist that inadvertently caused the robot takeover of the world. When his last creation completes a decade-long plan to end his own life, he ends up surprised. Creation offers him a second chance to test his wits and cunning in another world. Fate, however, is fickle and Regan ends up as a Dungeon Core...with all his memories. Is the world of Murgin ready to face such a dungeon? Let's find out....

As Robia Valley recovers from the necromancer attack, Regan and Louella work to increase their strength to meet the coming challenges. In the dark, forces move to unknown means. Adventurers come from far and wide to test their strength in the rumored dungeon. Join them as they make their journey.

To say things have changed since the battle with the demons would be an understatement. Louella is working to pick up the pieces that were seemingly held together only through the glue that was Regan. Can Louella rise to the occasion without the Regan's aid? With Lelune's followers decimated or losing faith along with the ever-ambitious Cassin finally making his presence in Celestia felt, the world is literally crashing down around her. That doesn't mean Lelune is going to lie down and let it happen. It has been a long time since the Celestials went to war. Can Murgin survive it?

Belissar has always lived a peaceful life, if not a particularly easy one. Though he lost his parents, he was taken in by a kindly villager who taught him his life's calling: beekeeping. But one day the local lord's ruthless son, Ruckanos, comes to their humble village to claim his own tower, slaughtering everyone. Luckily for Belissar, as he lies dying with an arrow in his back, a tiny worker bee decides to interfere, and he wakes up not only alive but a whole new bee-ing.

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.

Somewhere in the toxic Bone Pits, where mechanical nightmares roam, an emaciated and wounded young wolf clings to life. Wracked with pain, driven by instinct, it crawls across the subterranean landscape, avoiding the unnatural horrors that dwell there and seeking sustenance while fending off rats, insects, and other vermin stalking it as prey.

Ever since Arwin was summoned as a child, all he has known is war. And now, to claim the demon queen's life and end the war, he has to sacrifice himself. But, as he deals the final blow, the Hero of Mankind is betrayed. Caught in a magical explosion thought to end him, Arwin awakens a month later to find that everyone has already moved on. His [Hero] class has changed to a unique blacksmith Class called [The Living Forge] that is empowered by consuming magical items, but some of his old passive [Titles] remain, giving him the power to forge his new future exactly the way he wants to.

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.

She wanted to be a Necromancer, but awakened as a Saint! Somehow her summoned heroes are all undead? How will the church react when their Saintess summons a skeleton in place of a mighty hero? Sofia isn’t too keen on finding out. In this world, Gods choose [Saints], and [Saints] summon [Heroes] from other worlds; everyone knows that. But Sofia had a thing for bones ever since she was a child; there’s only one [Class] she wants: [Necromancer]! When, by the whims of fate, she gets both classes at the same time, the system breaks.

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?

Jin Rou wanted to be a cultivator. A man powerful enough to defy the heavens. A master of martial arts. A lord of spiritual power. Unfortunately for him, he died, and now I’m stuck in his body. Arrogant Masters? Heavenly Tribulations? All that violence and bloodshed? Yeah, no thanks. I’m getting out of here. Farm life sounds pretty great. Tilling a field by hand is fun when you’ve got the strength of ten men—though maybe I shouldn’t have fed those Spirit Herbs to my pet rooster.

Syl was given a choice by Gramps when they died. Reincarnate as a regular person or embark on a daring experiment. Driven by a desire to honor Gramps and a sense of adventure, Syl chose the latter... only to awaken as a lowly slime. A farmed slime. The life of a farmed slime was cruel. Syl was constantly at the mercy of humans, a slime whose only purpose was to eat and recycle garbage. The threat of lethal core-destroying knives wielded by innocent children was a constant shadow. This was not the life Syl had envisioned. So, they made a daring escape to the wilderness!

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.

Ashlock wakes in the courtyard of a demonic sect... as a tree. A tree that eats people. An odd start to a new life. Almost as strange as the humans flying through the skies on flaming swords and challenging the heavens. After all, this is a world where humans could chase the goal of immortality through the art of cultivation. But Ashlock is merely a sapling in a desolate courtyard, left alone with his thoughts and unable to speak to those passing him by. Unless he does something about it.

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.