Game Idea

I am designing my game for children with no experience with Spanish.  The game will teach Spanish vocabulary and phrases.  In my game a family travels to a city in Mexico, for vacation.  The kid in the game spends the day walking around the city buying souvenirs and seeing the sites.  The player has to learn Spanish vocabulary to make their way through the city.  They earn points for buying things and site seeing to motivate them to explore and learn more vocabulary.  A game is a better way of learning than a quiz because, if it's done right, you don't realize you're learning anything because you are having fun.