Also Unity games were mod unfriendly, meaning that those games are mostly dead by now.
And I don't know what it was exactly, but Unity games (specifically the RPGs) seemed to lack some sort of gritty realism with character interaction and movement. It just seemed cartoony and missing some sort of UI feedback that made the game feel 'real'. Maybe because of lag because of the terrible engine, I don't know.
Maybe one day a Linux engine remake of Unity will make all of the amazing RPGs playable and moddable again, like Pillars of Eternity 1/2 or Wasteland.