I Have 48 Hours a Day (我的一天有48 小时) by Little Bleary Zhao (English Translation)

Growing up with eccentric materialistic parents who left him in the care of his grandfather for a job overseas, Zhang Heng had learned to adapt and be unfettered by the oddities and challenges in life. But, he would soon learn the baffling truth about the world he thought he knew when one day, at midnight time froze and he found himself in a world so quiet and still it was deafening.

That night, he discovered that he had 24 hours more than everybody else and thus, marked the beginning of his adventures. The mysteries surrounding his newfound ability only deepened when a strange old man claimed to have given Zhang Heng that 'gift of time' and recruited the young man to participate in a cryptic 'life-changing' game on his behalf.

Little did Zhang Heng know that accepting those terms meant embroiling himself in many versions of reality and exposing himself to the hidden secrets of the world-a decision he could never undo.

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Interesting story with good world building for every 'game' that Zhang Heng played. Of course it's not 100% accurate, but it was very good considering the author updates every day. The main character is neither evil or overly righteous. Not an MC who thinks his decision is always the most right. He will give suggestion to other people, but whether they do it or not he won't care. One of his life principle is as an adult, people are free to make decision, but they also have to bear with the consequences.

MC is smart and won't throw himself to danger for every stranger that he met. He is loyal to his friend and doesn't collect woman as if they are Pokemons. The story focused more on the action rather than romance. There are some people who seems to be love interest but none are confirmed yet.