I Became the Little Demon in Leading Role's Family - Chapter 685 - 694 I’m Fine, Just Feeling a Bit Cold-hearted

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.

I, Luo Huai, one of the three phantom gods of the Orphanage in the south of the city, a person who is capable of combat power and can go back and forth between the three worlds of phantom, mortal, and hell (punishment). …and so on a bunch of configuration.

Very strong, right? Invincible, right?

But the problem is that other people’s resurrection points are in the Mortal Realm… Why is my resurrection point punishing the world! A bunch of fairies!

“I’m invincible, so far I haven’t defeated the zombie man at the door, woo woo woo~” A man surnamed Luo cried bitterly in front of the camera…

With game elements such as [My World] [Hearthstone] [Running Board Game], some features have been slightly modified, players are welcome to enter.

There are online game elements, and there are also infinite streaming elements.

- Description from novelbuddy

Every twenty years, the world of Tower Defense arrives to take away people and make them participate in the survival game. You can get unimaginable rewards if you can win. You can also inflict severe damage to your country if you lose.

Pierce finds himself in this world, and sent to the Tower Defense alone, while other teams have a hundred people.

Fortunately, he awakens golden hint system. Not only can he see useful alerts, he can also discover the fatal weaknesses of his enemies. Every monster he takes down rewards him with top-tier prizes. While the other players are still struggling, he is already swinging his swords to take the lives of gods.

As an anti-fan of the idol group, Starry Night, An Xiaxia is happy to spend her time online slandering lead singer Sheng Yize.