Game Control: Raising an Apocalyptic Girl in the Old Days

[Overpowered protagonist + Cards + Game control + One heroine + Simulator + Decisive and ruthless + Cthulhu]

Before the Old Ones arrived, a mysterious game appeared in Xia An's mind. He could leave it running on autopilot to play cards, or control the characters himself.

Only when he started playing as the heroine did he realize that all the game's mechanics were actually golden fingers!

Feature One: [Save and Load] Turn back time and revive as many times as you like!

Feature Two: [Health Regeneration Out of Combat] Recover 1% per second, with a portable healing spring built in.

Feature Three: [Stat Panel] Add one attribute point to level up and grow stronger.

Feature Four: [Pick Up Cards] Get close enough, click “Pick Up,” and you can snatch an enemy's magical treasure by force.

Feature Five: [Game Settings] Adjust them freely to become immune to all sensory and mental attacks.

Feature Six: [Player Identity] There can only ever be one player, and once you're registered, you're registered for life.

Feature Seven: ...

My name is Lu Youyou, and I'm an innocent, naive college student.

Then one day, I stumbled into the supernatural, and an evil god kept tempting me to give my body to it.

I believed it, and the evil god showed me what it could do:

Turn back time, dodge causality, conjure objects from thin air, force-kill enemies, grow stronger by breathing... Some of it I could understand, but some of it was beyond me.

Still, I knew it had to be a powerful figure amusing itself in the mortal world.

So, under its guidance, I went from [Down-and-Out Girl] to [Legendary Investigator] to [World-Ending Calamity].

I grew stronger step by step, and brought many changes to this world.

At last, I finally understood!

Though he kept insisting that killing people was just a way to grind experience and that it made the game more fun,

all along, the reason he was controlling me was that he wanted to save the world...