Capture Light is a two-player competitive parkour game. According to the theme of this time "Capture", we have made a detailed analysis and discussion on the light and shadow branch. The game is based on the concept of Tai Chi and Yang in Taoism in traditional Chinese culture. It concretizes "Yin" and "Yang", and combines the implication of "There is a fish in the north, and its name is Kun" in Zhuangzi's "Xiaoyaoyou". The two extremes of yin and yang resemble the "Kun" in the shape of two yin and yang fishes. Yin and Yang capture and transform each other. We use the light and shadow changes in the scene and the changes in the capture relationship between Yin and Yang to reflect the connotation of Taoism in traditional Chinese culture that our game wants to express. The core gameplay of the game is that two players control Yin and Yang respectively, and the two capture each other. At the beginning of the game, the yin-yang capture relationship is randomly generated, and as time passes or the position relationship changes, the yin-yang capture relationship also changes. Players can obtain different skills and basic attribute enhancements through the talent system. During the chase, players try to obtain field props of the same attribute to accumulate energy and trigger skills. When the distance between the two is close, the capture party can absorb the energy of the captured party. When one party loses all of its energy, the game ends.