My wife and I got Reincarnated in Martial World - Chapter 3: Crossing the Line

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of power enemies depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

- Description from Novelupdates

This book is also known as: “How Programmers Turn a Crappy Game into a Timeless Classic with a Single BUG”Recently, the president of Nitiandang, Gu Fan, once again fell from grace due to a minor bug in his new game.As a top-notch designer in the industry, all of the games designed by Gu Fan have very distinct characteristics:At first, players felt that these games were monotonous, dull, and purely revolting garbage.However, once players discovered a major bug, the gameplay underwent a drastic transformation, rendering them sleep-deprived and unable to quit!So, players once again launched a major debate over “whether this is actually a bug or a game mechanic.”In response to this, Gu Fan clarified in an interview with all seriousness:“Hello everyone, I'm the game designer Gu Fan, but you can also call me by my English name: fan·gu (means rebel).”“I want to reiterate firmly that these so-called 'core gameplays' were not part of our company's original design—they are bugs! It's just that we didn't fix them because the players liked them!”

"To be a star is to own the world and all the people in it."
...
Two years ago, Aiden came to the United States to experience the American Dream. But after sleepless nights of struggle, just when he was on the verge of giving up, a translucent screen flashed in front of him - it was a System!

A System that would make him embark on a journey to Hollywood. And today, he takes his first step by mesmerising the world through his singing!

So come and join him, for his journey, has just begun.

Singing? I'm the best at it.
Acting? I have Oscars lying around in my bathroom; you can practice your acceptance with it.
Movie Direction? They call me the king of the box office.
Novel Writing? Two words: Best Seller.

From creating the highest-selling music album to becoming the world's most famous superhero - Aiden will do everything to write his own legend.

--- All the songs and movie scripts in this book will be Original, and I'll be the one writing them. ---
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In the tenth year after the new era, the world finally came to an end. Zhang Mu truefully waited for his death, but unexpectedly found that he had returned to ten years ago. With his memory about the future, he swore that he would change the calamitous history, saving the earth from being destroyed! Walking dead, zergs, evolvers, and various mutated animals… nothing can stop him! The first step is to retrieve his identity as an era merchant , then find all the treasures he can remember to enhance himself!

- Description from Novelupdates