Improvisational theatre (also known as improv or impro) is a form of theatre in which the actors use improvisational acting techniques to perform spontaneously. Actors typically use auience suggestions to guide the performance as they create dialogue, setting, and plot extemporaneously. Improvisational theatre performances tend to be comedic, although some forms, including Playback Theatre and Theatre of the Oppressed, are not necessarily intended to be comedic.