The Incredibly Awesome History of Cosplay All About CosplayDefine costume play heart in simple terms. Costume play involves dressing up and pretending to be a specific character from an manga. It has become immensely popular amongst enthusiasts of geek subculture internationally. Individuals meticulously design outfits and props to accurately portray their favorite characters. Costume players commonly attend events or cosplay events, where they can showcase their creativity and network with like-minded individuals who share the same passion. In the end, costume play is an form of admiration and dedication for the fictional character and the love for the nerd community.