Addai67 wrote...
What does cosplay mean? I gather it is dressing up as a game character?
Basically.
From Wikipedia...
Cosplay (コスプレ, kosupure?), short for "costume roleplay",[1] is a type of performance art in which participants don costumes and accessories to represent a specific character or idea. Characters are often[citation needed] drawn from popular fiction in Japan. Favorite sources include manga, anime, tokusatsu, comic books, graphic novels, video games, hentai and fantasy movies. Role play includes portrayals of J-pop and J-rock stars, Taiwanese puppet characters, science fiction characters, characters from musical stories, classic novels, and entertainment software. Any entity from the real or virtual world that lends itself to dramatic interpretation may be taken up as a subject. Inanimate objects are given anthropomorphic forms and it is not unusual to see genders switched, with women playing male roles and vice versa.
Cosplayers often interact to create a subculture centered around role play. A broader use of the term cosplay applies it to any costumed role play in venues apart from the stage, regardless of the cultural context. The term cosplay represents a contraction of the English words costume roleplay. The term was coined by Nobuyuki Takahashi of the Japanese studio Studio Hard while attending the 1984 Los Angeles Science Fiction Worldcon.[2] He was impressed by the hall and the costumed fans and reported on both in Japanese science fiction magazines. The coinage reflects a common Japanese method of abbreviation in which the first two moras of a pair of words are used to form an independent compound. Costume becomes kosu (コス), and roleplay becomes pure (プレ).
It's mostly at conventions.