At the end of the game after the credits, you will see the ranking you earned. Your ranking is determined by many factors, such as the time needed to complete the game and Boss, how many monsters you killed, how much damage you took, etc. At the bottom of the screen you will see two rows of stars. Each large star represents ten small stars, Use these stars to calculate your final ranking out of 10.0. For example, if you got seven large stars and eight small stars, your ranking would be 7.8.