Botsuraku Youtei Nanode Kajishokunin wo Mezasu - Chapter 2-16

Alien civilization invaded, global psionics recovered, and a game against alien civilization was born…

What? All transactions in the game can only use psionic coins?

Can’t you quickly increase your strength without burning a lot of money?

Su Yu smiled while standing beside the world’s largest psionic spring.

I have tens of billions of psionic coins! Are you scared?

…

Ps: There are already 1.6 million words of the old book, and the credibility is guaranteed.

- Description from novelbuddy

This is the story of a crazy lich who possesses an internal game system and brings catastrophe to the entire world.

Son of a bitch! I just finished this godawful fantasy novel, and now I'm knee-deep in it – as David, the disgraced son of the Solarian Empire's top general! Talk about some twisted cosmic joke. But hold on a damn minute... maybe this isn't all bad. Armed with the knowledge of that trashy plot, I can become the ultimate shadow player, an overlord perhaps. Screw the damsel-in-distress harem too – it's time to pull the strings and become the real power behind the throne. This isekai might be a steaming pile, but I'm rewriting the ending with a little more... Debauchery (wink wink).

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?