Your living in a city on a little island and your goal is to - live the life! Study > get a job > get rich > own the city and become king! 
When you have bought all the buildings you'll become king. Search the island and find new things.
... And you can also submit your score (lifepoints) on a global highscoretable!
The lifepoints is your money, skills, stuff bought, buildings own, -Everything. (the more the better > more score)