They Said I Had No Magic, But My Mark Holds a Secret - Chapter 76: The Fifth Chair

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.

Yang Qizhou unexpectedly obtained a text-based role-playing game called 【Deceit World】 and discovered that the rewards he received in the game could be brought into reality, and various bizarre events also began to unfold in the real world.In the era of ancient earth, ancient god sacrifices, the return of the old gods, strangeness rises, horror rampages, the unknown and the mysterious coexist, distortion and evil thrive, the sun cannot be directly viewed, the night cannot last long, dreams involve calamity, and the river of death holds terror... This is an era where even deities can fall, and even the sky can decay.Yang Qizhou obtained the 'Blasphemous Dark Crow' and, relying on the ability to restart fate, embarked on the path to become the 'Master of Blasphemy'.

Greg watched his world come to an end under the hands of the enemies supported by his fellow species. while blaming himself for not starting the game early or not investing into, or for awakening a trash talent he close his eyes and embraced dead but that was not the end of his story as he regressed to ten years prior to the unfortunate event. with knowledge of the future and determination he buys a gaming helmet and plunged into the game- Apocalypse that signalled the start of something more. with his knowledge of the future, his skills that made him shine even with his trashy talent and the awakening of an ex rank talent, 100% Dodge rate that makes attacking him impossible, read Greg's revenge and rise to the top protecting those he cares about while punishing his enemies

By accident, Lu Zhiyu found the entrance to a low-dimensional world, and thus began a totally different journey!

Free to control everything in the low-dimensional game, Lu Zhiyu felt like a gamemaster, and even God.

- Description from Novelupdates