Cyberpunk: Ultimate Cyborg System - Chapter 5: Shootout.

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.

It was the year 2050. The world had released an online game, “Second World”, that shocked the public beta. Gold from the game could be exchanged for real-life currency, attracting countless players. Every country in the world fought for game resources. The main character immediately entered the game after this wave.

After entering the game as an adventurer (job before job change), he stepped into the first stage of his life. It was a stage that even a child could pass.

He thought that it was a normal stage. However, he did not expect to be locked into the game and continuously repeat the stage!

As time passed, the stage finally let him pass as per normal a thousand years later. He finally left the dungeon after clearing the stage. It was only now that he realized that this was only the second day of the game!

He realized that this was not a dream after he saw his attribute panel. What followed was a variety of system notifications!

“Reached MAX proficiency with the ax—Ax God!” “Reached MAX proficiency with the sword—Sword God!” “Reached MAX proficiency with the heavy shield—Shield God!” “Reached MAX proficiency with all weapons—Almighty Master!”

“As your proficiency as an adventurer has overloaded and you have not changed your job in a long time, you can now undergo a unique job change as we have detected your proficiency with weapons—Battle God!”

A deep crack appeared on the ground when he struck the level 1 wild monster with the small wooden sword in his hand!

The eldest son of the assassin aristocrat Tuatha Dé.

The skill, experience, knowledge of the previous life, magic, all of which grows his power as an assassin.

Excellent assassins pass through. He was usually admired as the ideal lord, and behind it wielded a blade as an assassin aristocrat.

Start a planet, civilization depends on creation.

Wang Yi, a young man in the 21st century, by chance and coincidence, his soul traveled to a world where everyone has the opportunity to awaken the planet.

The larger the diameter of the planet, the more advanced the transformed energy, and the stronger the civilization created.

Someone obtains the energy of the planet as “Martial Arts True Qi”, and uses the creation sand table to create a martial arts civilization. The people on the planet are warriors.

Someone obtains the energy of the planet as “Xiandao Zhenyuan”, uses the creation sand table to create an immortal civilization, and the people on the planet are all practitioners!

Some people gain planetary energy as “fighting qi”, use the creation sand table to create a fighting qi civilization, and the people on the planet are all fighters!

Someone obtains the energy of the planet as “soul power”, and uses the creation sand table to create a soul civilization, and the people on the planet are all soul masters!

It is “magic” for someone to obtain planetary energy, use the creation sandbox to create a magical civilization, and the people on the planet are all magicians!

 …

Everyone is trying their best to evolve a magical civilization system.

However, Wang Yi used the memory of his previous life to start the evolution of the “prehistoric” civilization!

“Your world-destroying laser cannon is powerful, and I have Pangu, the son of Dao! A single ax down will bring your world back to chaos!”

“Your thousands of angels are powerful, I have three thousand Chaos Demon Gods, and I will beat you every minute!”

“Your dark army is awesome, I have a Buddhist quasi-sage who will transform you in minutes!”

“…”

This is a story of crushing all kinds of extraordinary civilizations with prehistoric civilizations!

Ps: This book is purely fictitious, any similarity is purely coincidental! Do not imitate!

Don’t spray if you don’t like it!

- Description from novelbuddy