The article deals with one of the types of the Polish contemporary theatre - the theatre of artistic experiments which, in spite of its niche character, has a fundamental importance for the Polish culture and is one of its major foreign ambassadors. The author has attempted to give an overview of this kind of theatre by classifying different sorts of experimental practices undertaken by Polish theatre artists in their work, including examples from recent productions of the most renowned of them. The diversity of the theatre life in our country coupled with its permanent development as well as the limited size of this article, the methodology adopted and the inevitable subjectivity with regard to the analyzed phenomenon have led to this classification being not entirely complete and absolutely scientifically objective. Instead, it shall be treated merely as a starting point for a comprehensive research in this subject matter.