I did a solo game and I found the world-building experience to be very enjoyable! Here's a map of my solo game:
This game saw the Bassicons (a civilization starting in Mouthico, a settlement on the river mouth of a lake) rise as a power stretching from Rivola (a farming town) to Necow (a former necromancy tower that harvested cow steel, a made-up alloy that is analogous to pig iron, for their skeleton raiders until being conquered in a decisive battle). However, soon the empire fell after a rebellion causing the Reefic Republic to gain independence, and their homeland settlements started to fall to disasters and attacks from the Lumbarvi (Elves harvesting burnwood, which has a melting point higher than man-made fires).