Though you only play 15 minutes each day, the days begin to quickly add up
Difficulty: Just Right, all the games are kinda hard, but not too hard in any way.
Sound: Pleasant music is pretty much the soundtrack, but it fits in very well. Also, pleasant noises go off when you get answers right and such.
Presentation: All menus are easy to get to where you want to go and such. Very well done.
Note: People say the mic and writing recognition is not good, but it works very well for me.
Outro: Overall a very solid game especially for 20 or less dollars. You will put many hours into this game.