My Angel system - Chapter 311 Last Minute Save

Have you often come across a game where you start with a bonfire, surrounded by ice and snow, with resources all manually transported, and monsters attacking at any time...Xia Hong wakes up to find himself in such a world.The ice and snow rage on, beasts rule the land, civilization is lost, and all people and things that once existed have been invaded into powerful and bizarre entities, leaving humans as a humble race surviving in the shadow of winter, on the brink of extinction.Fortunately, Xia Hong possesses a camp system that can upgrade infinitely.[Small Bonfire]—[Iron Furnace]—[Solar Cauldron]...[Wooden Post]—[Training Ground]—[Martial Arts Hall]...[Bamboo Fence]—[Black Soil Wall]—[Iron Wall]...[Monument Stone]—[Notice Board]—[Hero's Monument]......As Xia Hong slays the beasts and exterminates the bizarre entities, gradually gathering humans, dispelling the winter, and opening up territory, the mysterious veil of this world is slowly unveiled in its entirety.

Mu Jingzhe transmigrates into a book filled with sweet, doting love to become the useless supporting character who serves as a foil to the female lead. She also becomes the stepmom of five kids to her recently deceased husband.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Hello, my name is Bologue Lazarus, a debtor.The wound on Bologue's face is healing at an observable speed. The blood remaining on his face flows back, and the skin is reattached, as if time is reversing.Faced with the terrified dying demon, he whispered.This is my “blessing”, the “debt” I owe.Sixty-six years ago, with the end of the Scorched Earth Fury, Opus of Oath City rose from the ruins of the Holy City.Sixty-six years later, the Kagader Empire and Rhine Alliance, two colossal entities spanning the continent, are plotting another all-consuming war.Order Bureau, King's Secret Sword, Order of Truth, Corrupted Sect, All Secrets Order... existences hidden in the shadows of history, trying to join this grand celebration.Under the curtain, the devils enjoy the agony of mortals, taste the values offered, manipulate fate, and bestow curses and blessings.Gazing at the mortals who were originally kindred spirits, they loathe and slaughter each other...