2018 Warsaw Comic Con held in Nadarzyn, Poland

A man shows a moveable ball labyrinth during the 2018 Warsaw Game Show in Nadarzyn, Poland, on Oct. 27, 2018. The Warsaw Games Show, which is held from Oct. 26 to Oct. 28, is an exhibition for game lovers and fans at the PTAK Expo in Nadarzyn. (Xinhua/Jaap Arriens)