The Villain's Cheat Code: When a Gamer Becomes the Evil God's Sidekick - Chapter 163 - 164: That Kind of Thing... At Least Wait Until After Marriage

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

Talent? Unnecessary! Wealth? Doesn’t matter! Brain? Eat it!

Even if one was the greatest of gutter trashes with zero redeemable qualities, as long as they had a System, they are bound to reach the pinnacle of life.

Compass Carburettor, a dirt-poor orphan with absolutely zero f**king qualities managed to reach the peak of the business world by the age of 35, all while relying on his Money-Making System like a blinded barnacle.

But at the peak of his life, he was betrayed by his System.

Super soldier Su Chen, returned to the city and returned to the city, set off all directions! The king of soldiers that once famous the world, let everyone be convinced!

- Description from xbiquge

In modern society, a 24-year-old ordinary young man Reid managed to avoid a dump truck and declined the invitation to the reincarnation space, only to be sent to the Marvel Universe by a computer malfunction. There, he obtained the DC role-playing system. As a result, the Marvel Universe got a taste of the darkness from the DC Universe.In order to protect the Wayne Corporation, Alfred pulled the trigger on the executives supporting the IPO.To eliminate the mutant threat, he allowed Jean Grey to be infected with the Joker infection.Captain Marvel, who served as the cosmic police, could never have imagined that the Martian Manhunter, who followed her in fighting against the Kree empire, had been secretly controlling her mind all along.“I am indeed playing the role of a hero,” Reid did not deny this. “However, it's a hero that belongs to me.”When the threat was finally neutralized and the Justice League ascended the podium, people realized they had already been shrouded in injustice.