The introduction of this paper provides a brief overview of the concept of a play, as well as some notes on the authors Janko Polić Kamov and Miroslav Krleža, whose two plays are the centerpiece of it. In addition to the short introduction to the plays themselves, Mamino Srce and Gospoda Glembajevi, the paper addresses the topic of a declining family, which represents the common motif in both of aforementioned authors' plays. The primary thesis of this paper is the assumption that, despite various similarities between the two authors, there are no indications that M. Krleža ''copied'' (plagiarised) J.P. Kamov's work. This conclusion is drawn from the analysis of the literary styles of the two authors. The entire analysis is the proof of how their penmanship is almost entirely different, and how, apart from the main topic itself, there are no connections to be found between the writing styles of the two authors. Krleža employs a very personalized style, distinguishable by quite lengthy sentences, filled with foreign expressions, while Kamov wrote very ironically, a bit poetically, and completely avant-garde. Kreža is the representative of new objectivity, where as Kamov's work is marked by avant-garde.