This document discusses using improv games in the ESL classroom. It defines improv as spontaneous, intuitive action and explains that improv skills can be taught. Seven principles of improv are outlined: trust, acceptance, attentive listening, spontaneity, storytelling, nonverbal communication, and warm-ups. Several specific improv games are described that target these principles, including "Pass the Clap", "Name Game", and "Yes, And" storytelling. The document concludes by citing references that discuss how improv can promote collaboration and deep learning.