Dungeon King: The Hidden Ruler - Chapter 20

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Jumping From World to the world: Intergalactic or Urban, World of Cultivation or Continent of Magic, Fighting other protagonists, hooking with beautiful heroines, plundering treasures, and suppressing a myriad of people, Our Protagonist(Villain) can do it all.

After living an ordinary life for years, a man finally got transmigrated to another world. He woke up in the body of a boy named Jun Tianyun.

“A world which got its own protagonists and villains, am I just a side character?” Jun Tianyun mumbled.

Thankfully, he activated Heaven's Fortune System.

“Jun Tianyun! You crippled my power and stole my wife! You villain! You will be punished by heaven!”

A protagonist screamed as he coughed a mouthful of blood.

“I didn't do anything. It was your fate!” Jun Tianyun explained kindly.

“Brother Jun! Because of you, I am still alive and living a normal life with my wife and two children. You are a saint!”

A villain spoke with an emotional voice.

“I didn't do anything. You earned your chance of redemption.” Jun Tianyun sighed.

[ Ding! A female with high Destiny Point is detected! Whether Host wants to steal her destiny or conquer the heroine?]

“This...” Jun Tianyun fell in dillema.

“Sigh, Changing the fate, So burdensome.”

Jun Tianyun sighed as he saw a bunch of heroines fighting for him.

Levelling up?Gods System?After dying from overwork, Harry awakens in a world where humanity fights for survival against relentless alien invaders, each person’s fate determined by a power they awaken on their tenth birthday.With his own tenth birthday looming, Harry chooses a seemingly weak ability, a decision that marks him as an outcast.But beneath the surface of this unassuming power lies a connection to ancient gods and a potential far beyond anything the world has seen.Armed with the mysterious System of the Gods, Harry must navigate a world teeming with treachery and secrets, where betrayal lurks around every corner. The alien threat, ever-adapting and evolving, doesn’t rest, growing stronger with each passing moment.As Harry struggles to master his newfound powers, he uncovers dark truths about the origins of the alien invaders—truths that could shatter everything he thought he knew.The fate of humanity teeters on the edge, and Harry’s true awakening is only just beginning.