This thesis focuses about the definition on man with Homo ludens. According to tranditional definition, either Homo sapiense or Homo faber is main current of human definition. But, I argue that these two definition doesn’t make proper constitution for human definition. In the traditional view, the definition of human being has been understood as a rational being Homo sapiens, Homo faber, but such understanding has been a stumbling block to full - time understanding of human beings because it emphasizes only a special viewpoint on human beings.As long as humans are understood as rational beings, understanding of humans comes to a new problem in super-human society, which is being developed on the basis of rapid scientific development in the 21st century. This discussion is based on the arguments of Yuval Noah Harari's "Sapiens" and "Homo deus".On the other hand, the way of understanding as an instrumental existence of human beings also has the difficulty of a partial understanding of human understanding. As an extension of the body, the making and use of tools seems to be very effective in defining human beings, but it reveals limitations in terms of understanding human culture.I think that humans as playful beings Homo ludens are a very appropriate way of understanding humans. This article was written in order to search for ways to overcome the fatigue society( Müdigkeitsgesellschaft) through human understanding in the horizon of modern society defined as so - called fatigue society(Müdigkeitsgesellschaft).