A "problem play" is a type of drama that explores controversial social issues and challenges traditional morality. These plays often raise questions and leave audiences with a sense of ambiguity. Other synonyms for the term include "issue play," "dilemma drama," and "controversial theater." These works were popular in the late 19th and early 20th centuries, and are still produced today. The themes explored in problem plays can include gender and sexuality, class and economic inequality, and political corruption. They aim to provoke thought and spark discussion, making them an important part of modern theater culture.