Description of the game: the architecture of the levels for the game was designed into a limitless challenging mode, which allows players to challenge their own records. Players can control the main character of the game by moving around as well as jumping up and down to dodge the busy- running vehicles on the streets. As the game processes, the number of the cars will be more intensive and the speed will become faster and faster so as to promote difficulty of the game. When comes to the end of each game, the program will assess the score of the current game and put it on record according to the miles that players run away, the number of the cars that are dodged and quantity of gained props. Moreover, the program will automatically show the highest record previously played when the players enter into the game next time.