Six Kings

A Fantasy LitRPG series full of monsters, loot, leveling up, civilization building, dungeon diving, and a personal enhancement system that grants anyone near immortality if they can survive all the monsters . . . and each other.

Six Kings is the fourth book book in the Integrated Universe series, an epic fantasy adventure which draws inspiration from a variety of popular Role Playing Games. If you're looking for an unforgettable adventure, the Integrated Universe needs to be on your reading list.