A 19-year-old New Zealander has died of a "serious head injury" sustained in a social media-inspired game of tackle with friends, police said. The young man, identified in local media as Ryan Satterthwaite,

Ryan Satterthwaite suffered a serious head injury when playing a game that sees participants charge at each other head-on without protective gear.

"Love you so much, lil bro," friends say after Ryan Satterthwaite, 19, was hurt while playing a game based on a controversial craze.