The Old Ones Awaken: I Became God in America

The Protagonist Becomes Cthulhu, Leaving the Other Protagonists Completely Oppressed by Him

The Protagonist Becomes an Immortal Monster, Aligned with the Neutral, Opposing, or Home Faction

Looking for books like "Eternal Night Era: I Became the Tyrant of a Sea of Corpses". The protagonist should be fundamentally different from humans, or mutate: zombie, jiangshi, ghost, vampire, werewolf, alien, paranormal entity, yaoguai, fiend, or demon. Fanfiction or original fiction is fine

The Protagonist Becomes a Monster and Keeps Evolving. No Harem, No Goody-Two-Shoes

Something like The Black Dragon Code.

Invincible from the Start, Doing Whatever He Wants in the City. Even the Nation Can't Touch Him

I want books similar to From the Start, Invincible: I Crush Everyone Who Refuses to Submit.

Urgently Looking for Foundation Fiction

Looking for books like Honkai: Star Rail: I Fabricate the Unknown and Scare the Gods to Tears.

Looking for Behind-the-Scenes Novels Similar to I Created the Monster Sequence

Looking for books similar to I Created the Monster Sequence! Behind-the-scenes stories where the protagonist explores supernatural powers, creates monsters and ability users, and seeks the path to godhood. Or other behind-the-scenes stories where the protagonist’s power comes from something like the Game of Divine Gifts...

Please Recommend Some SCP Foundation Books!

I'm looking for books like "The Old World's Sorrowful Flame: The Hanged King's Dirge".

A More Serious SCP Novel

No female lead, and no saintly protagonist.

Novels Where the Protagonist Can Create Monsters

Behind-the-Scenes Stories Where the Protagonist Fabricates Horrific Events or Creates Ghosts

A behind-the-scenes story where the protagonist fabricates terrifying incidents or creates ghosts.

Any Books Where the Male Lead Creates Monsters and Pulls the Strings Behind the Scenes?

I want to read something similar to I Created the Monster Sequence!

Making Up Worlds, Gods, and Evil... I Guess It's a Behind-the-Scenes Story

Any good similar stories will do.

Behind the Scenes, System, Summoning, Building Your Own Faction

Any Stories Where Someone Designs Supernatural Powers to Make Themself the Source of the Supernatural?

Are there any novels about someone who can edit their own cheat ability, design supernatural powers, become the source of the supernatural, and then gradually spread it and drive its development?