I Become Karna With a Million Times Crit System In Mahabharata. - Chapter 114 113. Asura Feild

In the cutthroat world of Westeros, where power is a game and everyone's fate is a pawn in a deadly chess match, Gendry is a nobody with a secret that could change everything. A bastard with the blood of the Stormborn coursing through his veins, he's been thrown into the scorching heart of a blacksmith's forge. Here, he'll face the trials of iron and fire, learn to hide his true identity, and carve out a path through the treacherous whirlpool of power.As the shadow of the Spider spreads across King's Landing, Gendry's fate takes a dark turn. Can he survive the deadly game of politics? And will he find his own glory amidst the forge's flames?

Wang Yi gets a key, opening a door in 2022 will lead to 1982, and opening a door in 1982 will return to 2022.

Two very different great eras appeared before him:

Abundant dietary protection, developed industrial products, miraculous medicines, and explosive information, this is 2022.

Simple folk customs, rich wild resources, scattered antiques, and treasures of the age, this is 1982.

Traveling between these two eras, Wang Yi didn’t think much of it, he just wanted to live a good life.

- Description from novelbuddy

The main character is reborn as a character from a game he played in his previous life. This character falls into ruin along with the villainess, spending the last of their years together. A man named Kururi Helan.

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy