The Witcher fandom consists of fans of books which were written by Andrzej Sapkowski, fans of videogames (the biggest part) and fans of recently released series with Henry Cavill.
Recent The Witcher Fest was in Vladivostok in 2019. There were some interactive zones for fans where they could play local poker game and card game which is also known as Gwint. Moreover, there visitors could fight a sword battle and tried shooting bows.
Besides, there were a lot of cosplayers who dressed in some kinds of medieval clothes copying their favourite characters from versatile pieces of art about the Witcher. Furthermore, the Fest was full of dances and musical performances.
Nowadays, fans communicate with each other mostly online through using diverse forums, websites, groups in social medias such as VKontakte and channels in Discord.
In fact, next Fest will be held online by Netflix and CD Project Red companies on 9th of July.
All in all, this fandom is for people who fall in love with the Witcher saga and feel happy being with other people with the same mind position.