Interactive theatre

Interactive theatre is a presentational or theatrical form or work that breaks the "fourth wall" that traditionally separates the performer from the audience both physically and verbally.

In traditional theatre, performance is limited to a designated stage area and the action of the play unfolds without any interplay with audience members, who function as passive observers. Conversely, in interactive theatre, the performance engages audience members directly, making them active participants in the piece. Interactive theatre often goes hand in hand with immersive theatre, which brings the audience into the same playing space as the performers, obliterating any walls that separate the audience from the performers. They may be asked to hold props, supply performance suggestions (as in improvisational theatre), share the action's real-world (non-theatrical) setting (as in Site specific theatre and immersive theatre), or become characters in the performance. In addition the audience may be asked to participate in altering the course of the play altogether by taking part in a collective vote to help steer the plot in a new direction, as with Augusto Boal's forum theatre. In therapeutic and educational settings, the audience may even be invited to discuss pertinent issues with the performers.

Theatre companies and shows that regularly utilize audiences in an interactive fashion within their performances include The Second City, pH, Supernatural Chicago, Dungeonmaster, Mystery on the Lake Productions, and Walkabout Theater.

There have been several stage shows where audience members can actively alter the plot. Examples include:

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