What a little gem.
I can't really say "it's a good game", as there are plenty of issues: some animations are just sluggish, movement through the map is quite tedious, 'tutorial'/prologue is confusing, UI is unfriendly and bizzare at times.

Simultaneously, it's just so much fun and even some of the flaws support fantasy of being an insidious, spiteful villain. Preparations are engaging, simulation is surprisingly complex and supports emerging gameplay where player's agency and creativity is the most important factor. It's really, really fun to decide whether you want to spend time on spreading the plague slowly debuffing everyone, infecting domestic animals with infernal parasites, or cutting resources from the village by summoning demonic portal in the mines or maybe animating carnivorous plants to pick off lumberjacks and militia one by one.

Lovely piece of junk.
Would absolutely pay for the sequel or DLCs.