My Celestial Ascension - Chapter 9 Grace

Meet Sora and Shiro, a brother and sister who are loser shut-ins by normal standards. But these siblings don’t play by the rules of the “crappy game” that is average society. In the world of gaming, this genius pair reigns supreme, their invincible avatar so famous that it’s the stuff of urban legend. So when a young boy calling himself God summons the siblings to a fantastic alternate world where war is forbidden and all conflicts–even those involving national borders–are decided by the outcome of games, Sora and Shiro have pretty much hit the jackpot. But they soon learn that in this world, humanity, cornered and outnumbered by other species, survives within the confines of one city. Will Sora and Shiro, two failures at life, turn out to be the saviors of mankind? Let the games begin…

She was a famous plastic surgeon in the 21st century, both at home and abroad. But one day, she transmigrated to become a young lady in the Prime Minister’s Mansion and got bullied. The concubine hung her up and beat her, forcing her to marry a fifty years old general as his second wife! But unexpectedly, she received an imperial edict and was asked to marry the emperor’s fifth son – the Evil King.

Who was the Evil King? A gunpowder explosion destroyed his appearance and one of his eyes. After waking up, Evil King’s temperament changed drastically. The handsome young man became a bloodthirsty and cruel tyrannical king. This was not even the most frightening thing. It was said that the Evil King had four wives, but none of them had lived over a month!

Last night, the Evil King’s fourth wife died. Today, she was tied up and sent to his mansion …

- Description from Novelupdates

Su Lin travels to a post-apocalyptic world governed by rules where he spends his days scavenging for supplies and his nights defending against monsters. The only way to survive is to build his own safe house and engage in tower defense survival.The original host's parents passed away, the defense of his residence reset to zero, and he faced despair and neglect. His fiancée was almost assigned away. Faced with this predicament, Su Lin gains the opportunity to enhance his abilities once a week through select traits.[King of the Garbage Can: Increases the probability of collecting low-level garbage items tenfold and enhances the power and effect of tools and buildings created using these items tenfold.][Glazed Cannon: The durability of your crafted weapon mechanisms is 80%, but receives a 40% damage increase.][White Take: Copy one item or building from a companion's hands every month.][One Hundred Push-Ups: Upon completing one hundred push-ups daily, you receive a 35% damage reduction for the day.][This is Hextech! Not cheating!: Consume any item, and for every ten items consumed, three are returned.]

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