Urban games: what are they? What is their essence? Who organizes them and why? Who plays and why? In my article I present and analyze the phenomenon of urban games that have taken place in Warsaw. The possible functions and aims of urban games may lead to them being used by many kinds of institutions, NGOs or private companies. Thanks to this, urban games have significantly increased in popularity during the last few years. In accordance with the function-related form of urban games, I have categorized them into fan games, educational games and commercial games.