A seminal book by Dutch historian Johan Huizinga, written in the 1930s, that explores the history and psychology of play. The title, meaning "Playing Man," suggests that play is a fundamental and essential activity of human culture, deeply embedded in our nature and crucial for societal development.
it's a book called homo ludens by Dutchman Johan henka
""Robert Greene recommends "Homo Ludens" as one of the greatest books ever written on the subject of play, directly naming the author and title."