A method for providing a replay of a guerrilla performance event in a virtual space includes storing guerrilla performance data in chronological order when a guerrilla performance occurs, providing a replay function when the guerrilla performance ends, and reproducing the guerrilla performance and audience characters for a character using the replay function based on the stored data. The stored data may include appearances of audience characters, behaviors of the audience characters, a guerrilla performance venue, staging of the guerrilla performance, and an artist performance video.