用滑鼠操控頂呱呱，點擊滑鼠捕捉蒼蠅，捕捉10隻蒼蠅餵飽頂呱呱 Use the mouse to control the top-quacking, click the mouse button to catch the flies, catch 10 flies and feed the top-quacking.
感謝陳記住老師給我的靈感。
