I only read the Wikipedia summary of a book. In it, a video game of some kind plays an important role in society. I don't know if it's a computer, console, or VR game.
Anyways, I think one of the premises of this society is that, if a player manages to defeat the gamemasters in the game, the player can ask anything of them. I think the main character wants to ask either for a new law of some kind or something for his family.
Another notable detail I remember is that, when the character is creating his in-game persona, he spends all of his stat points on an attribute either called "Beauty" or "Charm", which pretty much everyone believes is completely worthless. However, as a result of this, the game itself starts helping him.
I think he does end up fighting the gamemasters, and one of the gamemasters' characters is a vampire.