Final answer:
The type of intimate theatre that blurs boundaries between spectators and performers, taking place in non-traditional environments, is known as 'site-specific theatre' or environmental theatre.
Step-by-step explanation:
The type of "intimate theatre" you're referring to is known as site-specific theatre or environmental theatre. This form of theatre often takes place in locations that are not traditionally used for theatrical performances, such as parks, hotels, or public spaces. The idea is to immerse the audience in the environment and make the boundaries between performer and spectator less distinct. An excellent example of site-specific theatre is the production of Sleep No More, hosted at the McKittrick Hotel in New York, where the audience can interact directly with the environment and performers.
Site-specific theatre creates a unique experience that combines the story, the performers, and the environment into one cohesive narrative. Performers may engage directly with the audience, and at times, even invite them to participate in the story. The design of the production, the commitment of performers, and the level of audience immersion are crucial to the experience. In contrast to traditional theatres where the stage is separate from the audience, site-specific theatre often involves the audience moving with the performers, as seen with the practice of outdoor Shakespeare performances.