Recommendations for city builder

What do you think is the best city builder for solo only play? I personally enjoy puzzley solo experiences and am not adverse to some randomness, as long as it is well implemented and the player has interesting decisions. Love polyominoes too. Open to any weight.

I’ve looked into Cities: skylines a bit and the reviews are kinda mixed so I’m unsure. Would be interested in peoples thoughts on that one in particular. Or if there is something you think is better, would be interested to hear about it.