Define costume play heart plainly. Cosplay is all about dressing up and pretending to be a specific character from an video game. It has a huge sensation among fans of nerd culture around the world. Fans meticulously create outfits and accessories in order to faithfully represent their favorite characters. Cosplayers often participate in events or cosplay events, where they can display their creativity and network with others who share the same passion. Ultimately, costume play is an manifestation of appreciation and commitment for a fictional character and a love for the nerd community.