Illustrate costume play in simple terms. Costume play involves dressing up and pretending to be a specific character from an movie. It has become a huge sensation amongst enthusiasts of geek subculture around the world. People diligently create outfits and props in order to faithfully represent their favorite characters. Costume players frequently attend events or costume play events, where they can display their creativity and connect with others who share the same passion. Ultimately, costume play is an expression of admiration and commitment for a fictional character and the love for the nerd community.