Try an interesting and unusual game. Become a pen that must be able to pass its route in the excercise book and do not consume all filling. Try to keep the lines to get full stars. But if you really need a fill, you have no choice but to get out of the line and go for the refill. There will be a lot of obstacles in the way like books, notebooks, eraser, tacks and much more. Try to avoid all the obstacles successfully and pass all levels with all 3 stars. Have fun.