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I. Introduction-You don't have much free time? You want to relax in very small free time? Happy Fast Math - Crazy Speed is the best choice.-The game is simple but very very challenging game play, you must overcome yourself by increasing your high score.II. Game Rule-Simple rule, just choose correct comparison operators as fast as possible!III. Note-The game integrated with facebook and twitter social network, you can share your score to challenge your friends.-The game does not automatically post any thing to social network without your permission.-You can select suitable scale mode (default is fill full screen, others: fixed, ratio) for your device in setting.