Humanity's Greatest Mecha Warrior System - Chapter 1173 Long Walk

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.

With the flick of sleeves, it overturns.
With a thrust of punch, it shatters!
It’s a vast world filled with adept martial artists!

The ancient clash of the titans brings forth the wrath from heaven.
“They send down the thunder, they send down the fire! ”
They bolted the continents separating them into a land of 9 countries covering the 18 provinces, and the world therefore, ushers into the era resonating with the Dark Ages.

However, as the things run downhills, rise forth the cultivator team comprising the big deals.

Ye Shang, a young villager with a cinder burning in his heart thus, set off into the world of cultivation. A life-changing mystery! A competition for the throne! The winner becomes king!

What’s in store for him?

- Description from novelupdates

Having found herself caught in a dispute between two goddesses, follow Olivia as she ends up being transmigrated to a strange new world called Khallasia as another species.

This world contains many different races, from humans to elves and gnomes to beast-kin, along with monsters such as goblins and ogres.

Starting anew in this world with no possessions, she will try to live her life in a world that vilifies the races that make up her species.

Her journey will include having to learn to fight in a world where death is frequent, wars are brewing, and slavery, while illegal, is a common occurrence.

She will face many foes, from wild animals to full-fledged monsters, as well as bandits and robbers to knights and adventures, while she tries to find a place to call home.

With only her appearance changing, her mentality to do good deeds remains the same.

Whether this can continue in this new and more violent world is another story, especially since the urges that plague her species will soon start to plague her.

Warning: This is a harem, yuri novel where the MC is also a futanari.

“Your frog cub will bring you back the travel specialty [Wu Dun·Xueji Boundary]!”

“Your frog cub brought you a souvenir [Eternal Kaleidoscope Shaker Eye]!”

“Your frog cub brought you back the souvenir [Bamen Dunjia]!”

Traveling to the world of pirates, what Bai Ye didn’t expect was that a small game called “Traveling Frog” that he had played turned out to be his golden finger.

Also, the entire game has completely changed!

The place where the little frog travels has turned into various dimensional worlds!

And the original ordinary specialty has become a special product of each world!

Relying on the special products brought back by the little frog, Bai Ye can continue to become stronger even if he salts the fish every day.

Not only that, the friends the little frog has made in these worlds will come to visit from time to time.

“Ding dong! Frog cub’s little friend Hinata Hinata is visiting, let’s treat her with specialties~”

- Description from novelbuddy