Use Case Diagram

The user of this program has only one that is actor.  In Game interface, we have 5 types of game. The first is “Mixing Colors Game”. This game is  about how to combine 2 colour. The second is “Reflecting Light Game”. This game is about how to reflect light to the target. The third is “ Word Guessing game”. This game is about how to guess the word from picture. The forth is “Math game”. This game is about how to solve the math problem. The last one is "Geometry game". This game is about  how to choose geometry shape that match with the question.