Cosplay Definition Meaning Elucidate cosplay in simple terms. Costume play is all about dressing up and pretending to be a particular character from a video game. This trend has a massive trend amongst fans of geek culture globally. Individuals thoroughly create outfits and accessories that accurately reflect their favorite characters. Cosplayers usually attend events or cosplay events, where they can exhibit their creativity and meet others who share the same passion. In the end, costume play is an form of appreciation and commitment for a fictional character and the love for the nerd community.