diggy's adventure is a great little time killer. the devs use a little sense of humor in building this game. there are story lines that keep you going back. the idea is to remove blocks of obstacles while collecting. there are physical puzzles to solve in order to progress and upgrade items to allow for faster block removal. I am loving the 7th birthday story. this little game feels unique. thanks devs! Still playing. Love the stories. Doesn't take an excessive time commitment.