What makes Princess Maker so interesting isn't just 'clearing' the game, but actually interacting with the girl and watching her grow. For her to grow up healthy and happy, it takes constant attention and effort. You need to balance things like studying, working out, and resting, and sometimes you have to make tough choices. If you don't look after her well, she can end up unhappy or even rebellious. (At first, I used to make her work part-time five days a week to earn money for her education...)