I Became Peerless After I Threw My Whole Paycheck at a Real-Life Gacha - Chapter 3

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

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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Ted was reborn in London in 1991, and he had dreamed of becoming a millionaire, but a letter came from Hogwarts!

I thought that relying on the card system and monthly knowledge of other worlds, I would not be the second greatest white wizard of this century.

In the end, you told me that there have been two confluences of stars in this world, and now it is full of magical animals and plants from other worlds, as well as intelligent races!

What’s even more outrageous is that the savior has changed into Neville! Harry became Harley!

Nanadi, play Yindi with me, right?

Then no one wants to live~

System Upgrade!

- Description from novelbuddy

Several hundred thousand players are trapped in a gritty zombie apocalypse survival game just after game launch. There are hints that deaths in the game might be serving some other terrible purpose in the background of reality…