Arirang Mass Games at Mayday Stadium in Pyongyang, North Korea, a 120,000 performer-strong spectacle of gymnastic choreography with military precision, in one of the biggest sport arenas in the world. At the stand behind the field 20,000 person flip card mosaic to form detailed composite pictures.The performance takes place for two months in August and September. From as young as 5 years old kids are being selected to participate in the Mass Games.