Devil Slave (Satan system) - Chapter 7 Simple As Killing A Fly.

A game of life and death, a game that hides countless secrets. Winning will give you supreme power, and everything in the game can be brought back to reality. However, everything has a price. Once you die in the game, you will also die in reality. When the boundary between the game and reality becomes illusory, you can win everything or lose everything. Do you dare to play such a dangerous game?

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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[By the Author that brought you “Martial God Regressed to Level 2”]The Swordmaster, who unified the continent and vanquished the Demon King with nothing but his sword, thought he would live out his days peacefully in a world of tranquility.One day, however, he awakens 1,000 years later in the body of a distant descendant.In a world where magic is now held in higher regard than the sword, the empire has crumbled, and the imperial lineage has fallen into ruin.“More importantly, what is this pathetic excuse for a body?”He now inhabits the body of Kaylen, once known as a “walking slime”.With the demonic realm invading once again, he makes a vow:“Since I’ve mastered the sword, I might as well master magic too.”Thus begins the return of a transcendent being, armed with unparalleled magic and absolute swordsmanship, destined to save the world!

[Post-apocalyptic + No romantic pairings + Overpowered system + Management + Please read the bottom of the synopsis + Initially low-priced, enter at your own discretion]Gu Wanyin never imagined that not only would she transmigrate, but she’d end up in a post-apocalyptic world! Opening her eyes to find herself surrounded by zombies with only two pitifully thin adorable children by her side, Gu Wanyin thought: This is the end of me!System: Impossible, absolutely impossible!After binding to the most powerful hotel system in the post-apocalyptic world, Gu Wanyin embarked on a delightful journey of raising children and managing a hotel. As the hotel’s guests increased, so did her rewards! But could someone explain to her why a hotel that unlocked noodle shops, hot pot restaurants, and buffets was understandable, but why did it also have KTV, movie theaters, libraries, amusement parks, hot springs, schools, and hospitals? And even a zombie-killing simulation training camp? Wait, there’s even more…It seems she’s destined to transform this hotel into the only paradise in the post-apocalyptic world!