An optical proximity effect correcting method in a semiconductor manufacturing process includes adding, detecting, judging, and deleting. When the arrow strikes a game animal, barbs on the electronic game tracking device attach that device to the game animal, which electronic game tracking device then allows a hunter to readily track and find a wounded animal with a compatible receiver. Timing of the game operation executed by the player is compared with timing represented by the timing data stored in the timing data storage manes, the game operation executed by the player is evaluated, and a display position trajectory of the second timing instruction image on the display screen is changed depending on a result of the evaluation.