I Became a God in Rule-Based Horror Stories

(Infinite survival game with rule-based scenarios + mythological gacha System + ensemble cast + no saintly protagonist) During a graduation trip, Nian Sui and her friend Jiang Yuan disappear after boarding a high-speed train called G01. They enter a world of mist and begin one deadly game after another. “Ding-dong! Welcome, players, to the first instance in the World of Mist: Abandoned School.” “Players remaining: 723.” Monsters descend, each instance is a mystery box, a mythological System awakens with a card-draw feature, and there is a points leaderboard and survival rules to uncover. Nian Sui soon realizes this is no ordinary trip, but a game of life and death. “Nian Sui! You’re still alive?!” At the familiar voice, Nian Sui glanced over coolly. “Idiot.” … “Ah!!!!!! Someone’s been killed!” Seeing this, Nian Sui immediately rushed over and covered their mouth. When they struggled, a monster burst through the door. Nian Sui shoved them away, killing them, then exchanged points for a knife and cut off the monster’s head.