Doctor's Rebirth - Chapter 19:

All humans transmigrated to a parallel world, where every one of them was a king with the territory.

They participated in a game called The Ranking of Kings and fought to become the best nation.

The rankings were determined based on various aspects such as military, technology, commerce, culture, and religion.

In the game, the kings would awaken different attributes of the land.

Someone exclaimed, “My Renewable Resources attribute allows me to enhance raw materials such as timber and minerals. I want to build the strongest empire of commerce!”

Another king challenged, “My King of the Undead attribute allows me to summon dead souls to fight for me. Who dares to stand in the way of my troops of one million undead?”

The third king declared, “My Integrated Production attribute will ensure that technology is being implemented efficiently. You foolish barbarians, watch as my nation advances a few centuries ahead of yours.”

The fourth king said, “My Miracle Summon attribute can increase the efficiency of evangelism by 1000%. I look forward to the day when my nation becomes the top religion in the world.”

…

Li Xiang revealed a pondering look as he looked at his attributes shown on the virtual data panel.

[Attribute 1: Devils’ Den (SSS rank, unique)]

[You acquired the original birthplace of the Dragon Clan. All the legendary dragons are now under your command.]

[Attribute 2: Devouring Lands (currently A rank, evolvable)]

[When you annex the territory of other kings, you seize their attributes as well. Furthermore, you can level up these attributes to even higher ranks.]

Kim Taejune, wanted to be a “hero,” a “savior” to all the weak. After reading books about them, he too wanted to be one. Yet he lacked power, he didn't have any skills, and the command system everyone else had but one day, his dream will come true. His path leads him to encounter Yoon Harin a woman who after the death of her twin younger brother Yoon Jiho was transmigrated into his novel, “Calamity Hunter” the “god” of this world makes a deal with Yoon Harin to bring her brother back to life IF she can survive as a savior till the end.

Seven years ago, after their breakup, he disappeared without a trace.

Kai of the Sorcerer’s Tower is one of the last mages left, barely surviving in a world ruled by creatures of the dark — where the era of mages ended, and most of the lands got contaminated with dead mana. To save his world and fulfil his master’s last wish, he put himself through a forbidden ritual, risking his soul being ripped into pieces to make his way into the past. In an era with abundant mana — an era yet to enter the Golden Era of Magic. Things go wrong, of course, as they always do, and he finds himself thousands of years before the world fell to mana contamination — in the body of a young lord, Arzan. All is not well, though, as the young lord was murdered by someone right at the cusp of a beast wave threatening the territory, while larger threats loom on the horizon. There was a lot to do for Kai to regain his former strength in this time of primitive technology, but then again, he might just be able to change that.