Rule Horror: I'm the Designer

(Rule-Based Horror, Mystery, Wild Imagination, National Destiny, System, Power Fantasy) The supernatural descends, plunging the entire world into a deadly game of rule-based horror. Follow the rules, and you have a one-in-ten chance of survival. Break them, and death is certain. This is the consensus humanity reached after sacrificing hundreds of millions of lives. That is, until Lin Mo transmigrated. He was bound to the Rule Designer System. While everyone else racks their brains for a way to survive the instances, he struts around rewriting their rules. S-Rank Hospital Instance, 100% death rate. The nurse makes her midnight rounds. The patient in Bed 4 is doomed to die. Lin Mo picks up his pen and adds a line to the rules on the wall: [This hospital has abolished unlucky numbers. Any bed number containing "4" is automatically considered "14." Have a pleasant stay.] That night, the nurse smiles at him. "Bed 14, good night." The livestream chat goes wild. S-Rank Boarding Family Instance. Rules: You must call them "Mom and Dad" and smile forever. Lin Mo silently pulls out his pen: [This family supports parent-child mediation. You may express negative emotions.] The eerie smiles on the faces of the family of three crack on the spot. While the other Chosen Ones are still begging for the rulebook, Lin Mo is already writing the V2.0 update announcement backstage. Later, the Designer Association, the creators of the horror world, finally can't sit still. They send Lin Mo an invitation. Not to come and follow the rules. They want him to come back to work. "I hear you're a product manager?" "Funny you should ask. We're looking for someone to revise the requirements."