I'm a college student who watched with my own eyes as the world descended into hell. A Dark Sphere arrived on Earth, turning half the planet into zombies. They thrive on killing us—people—as every kill fuels their development and makes them stronger. Besides zombies, there are also mutants—mutated animals—plus monsters: bizarre creatures in possession of striking strength and abilities. Levels, skills, new yet unheard-of objects…our world has changed.

Humanity has fallen, killed by stronger races of beings after being warped away to a new reality, the mystical Seven Layers. Humanity's goal had been simple. Make it through all Seven Layers and reach Heaven. Humanity failed. Humanity died. Micheal Care's memories have been transported back into his past self thanks to a magical Artifact he found by chance. He is no chosen savior. He is no divinely picked hero. Can he change the future?

Isaac Thoma lived to see the last handful of survivors defeat the demonic champion. He is now alone, his past in ashes, the last and most powerful human on a blighted Earth. But what if he could go back? Hurled back in time, Isaac has one chance to change it all. A chance to warn humanity of their impending doom. A chance to stop the [System] before shortsightedness and lust for power can render humanity extinct.

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.

In a former life, Jack was gifted, meaning he possessed peculiar abilities. If rich folks found themselves in a jam, Jack could use his talents to get them out of it. Where others were sure to fail, Jack's aristocratic clientele could always count on him to finish jobs cleanly, efficiently, and leave no trace, for which his services commanded a hefty fee. But one day, Jack picked a fight with the wrong man and his old life came to an end. But, as it turned out, his story was far from over.

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.

As humanity is taking its final breath, facing extinction from a myriad of monsters, the last three people on earth are creating a final chance for the hero to go back in time and stop the apocalypse. However, before the hero can enter the chronomancer portal to the past, she and the portal's creator are both killed, leaving only the weak assistant to carry on their dream of saving the world. Will Nick be able to right the wrongs done to him, and prepare the hero for the world to come?

Eli "Nacho" Naches is a fearsome assassin who has lost everything in a post-apocalyptic world full of monstrous creatures. He knows where he fits in this horror show, and he’s only been hanging around to see what’s going to be thrown at him next. When he’s finally put in chains and sent to the chopping block, he goes readily...only to be unexpectedly sent back in time to his younger body with his memories intact and the chance to make a difference.

Everyone becomes prey when Earth is swallowed up and transmuted to a bestial landscape, the first stage of induction into Elysium's multiverse and a new galaxy in the making. In the blink of any eye, the bloodthirsty creatures of Riven Thane's worst nightmares are unleashed as he; his sister, Allie; and his friend Jose scramble amid the carnage to live another hour. But on this nothing of a planet, Riven is more special than he knows. He's among a select few with a singular bloodline, and the Elysium system has its eye on Riven in particular.

Noah Brown has a gift for fighting. Unfortunately, punching things doesn't pay the bills, at least until he died and an Eldritch god found his soul. The encounter brings him to a new world, summoned by bloody cultists. He's got nothing but the shirt on his back and a strange item in his system menu.

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.

E-rank hunter Jinwoo Sung has no money, no talent, and no prospects to speak of - and apparently, no luck, either! When he enters a hidden double dungeon one fateful day, he’s abandoned by his party and left to die at the hands of some of the most horrific monsters he’s ever encountered.

Jason Lee came to New York City to see the sights. But his plans quickly change when the Apocalypse Protocol is initiated. Rifts open across the Earth, unleashing hordes of monsters upon humanity. But gateways to dungeons also appear and, with them, opportunity. Finally, there's a system announcement: some individuals will be bestowed with powers and abilities to combat the monsters and protect their fellow humans.

Leading astrophysicist Liam Jackson is participating in a scientist exchange program in Germany when a curveball of universal proportions is thrown at him. Planes fall from the sky, cars explode, and strange particles rain down from the heavens as monsters appear out of thin air. The laws of physics have changed in the world. The fundamental forces of the universe are behaving differently, and Liam needs to understand them if he wants to survive.

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.