Civilization: Barbarians: A 4X lit novel

I never expected to become a disembodied spirit running a civilization One night I fell asleep, and a dinosaur wizard offered me the choice to become the ruler of a tribe of people who’d just gotten to the middle of the stone age. It would be my job to guide them from these inauspicious beginnings to glory and greatness. Of course I signed up. Barbarians keep attacking, and they are literally cannibals, I can’t talk to anyone directly so I’m getting lonely, and I’m terrified that I’ll make a mistake, and everyone in the settlement will die horribly. But still, this is way better than any video game.