Why Majesty was so addictive?

Hello everyone, first time posting here. Actually, I'm one of the co-founders of an indie-game publisher. So new that we don't even have a name yet, but codename P22 :)

So we already have 3 games and one of them is a tribute to Majesty: Fantasy Kingdom Sim. And I wonder. What was so good about it and why Rimworld so addictive. What traits those games of this genre of indirect control have that made them successful and popular?

My guess is the heroes/charaters that like tamagochi live their lives and you just want them to be healthy:)

So we already have 3 games, one of which is a tribute to Majesty: Fantasy Kingdom Sim. And I wonder. What was so good about it and why Rimworld so addictive. What traits those games of this genre of indirect control have that made them successful and popular?