I've been playing video games since the late 1970's. This is my favourite. You play the role of a very small royal prince with a very uncaring father who is king of the Universe. You roll things up in a ball to make things he has mislaid, like Jupiter. You start with paper clips and by the last level, you are rolling up continents. That's the entire game. Rolling up objects into a ball. Its a totally Japanese game. Except for the little bit of English sub-titles, its all Japanese and captures a very odd Japanese sensibility. But that's not why its fun. Its just really calming and satisfying to roll things up into a ball. I can't really explain it, its just great.