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This paper presents an interactive simulation system for flying kites, especially of Japanese types, and discusses the development of a flying kite game with a haptic interface device on a personal computer. The kite interacts with fluid and the computational costs associated with accurate calculation of its behavior are high. The system can precisely calculate the forces induced by air current exerted on the kite based on the graphs of lift and drag coefficients of rectangles with several aspect ratios established by experiments for wings and kites. Hence we can reproduce realistic behaviors of the kite even though it uses a coarse mesh for fluid simulation. The haptic interface device is connected to the simulation system to reflect the drag force applied by the operator and for force feedback from the kite though the kite string to the operator; we have developed a game that gives the feeling of flying a real kite.