Ready for combat? Grab some cardboard, tape and hot glue for a battle of epic proportions. Welcome to Boxwars, the bizarre medieval-inspired sport that’s given adults the chance to play. Participants get together to create a full range of battle gear using nothing but reclaimed cardboard and packing supplies. Originally devised by a small group of friends over drinks, Boxwars has grown to become a global phenomenon, with teams across Europe, Australia, the United States and Japan.