Johan Huizinga was a Dutch historian and philosopher, who in 1938 published his book "Homo Ludens: essay on the social function of the game." This book is considered a key work in game theory and has had a great impact on the study of game and culture. One of Huizinga's greatest contributions was his idea that the game is a fundamental activity in human culture, and that it is present in all historical societies and times. Huizinga's greatest contribution was his idea that the game is a fundamental activity in human culture, which transcends the playful function, and that it has an important social and cultural function. His approach to the rules of the game and the importance of the game in creativity and innovation have been very influential in the study of game and culture.