Probably their best
This game encapsulates everything I like from Kairosoft. What sets it apart from the rest is the long term gameplay. It’s really a game that goes on for ages (in a good way). And hey monetise using pvp/bonus stuff that you can get away without paying (you get free coins daily). I’d recommend it: simply because it’s the Kairosoft game I keep coming back to and end up playing for months at a time. Just ignore the pvp stuff if you don’t want to be pushed into paying (I prefer pve anyway).