MTL - The Fallen Merman - Chapter 31

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Jin a high school sophomore, died in an accident only to find himself being Reincarnated inside Fantasy-Action Game he wanted to play. But there is a catch, he was not reborn as a Hero but instead a Villain.Worse, Jin doesn't known the full story of the Game. He only memorize a certain part of it from his friend's mouth and he doesn't know his own fate. How he became a Villain? Or how he would meet his end?Will he lay low, avoiding any event and disaster, then live comfortable life? Or defy his own destiny and carve his own path to survival?In a World where choices determine everything, what would he had to do to survive?[World Quest Opened][World Quest: Prevent the Tragedy]Quest progress: 0%Reward: ???Penalty: Death

When Kim Seojin opened his eyes, he found himself three hundred years in the future.In the last three hundred years, humanity went through a lot of changes. Science had developed, cities became more modern, and space travel became a reality. But all of that came at a cost.The world had become a plaything of gods. Every year, humans were selected to represent their race in a devilish game, all for the entertainment of the gods.Kim Seojin was one of the thousand people selected in a timeline where he didn't belong.There was one more person. A Regressor burdened with the memories of countless failed timelines and the knowledge of the destruction to come, was also a part of the game…

This novel is also known as Almighty Video Game Designer

Chen Mo a game designer got sent to a parallel world with advance technology but undeveloped game concepts.

Watch as he redefines the world’s gaming industry with the games he remade from his old world.

- Description from Novelupdates