This game tests your calculation and reaction skills. Enjoy this casual game! Within a limited time of 20 seconds, select cards from the randomly updated cards at the bottom of the screen to reduce the boss's health and defeat him. If the time runs out and the boss's health is not exactly zero, you fail; otherwise, you succeed. Red hearts and diamonds increase health; black spades and clubs decrease health. Important Notice: This is a simulation game for entertainment purposes only. Suitable for adults (18 years and older).