London - The parents of a nine-year-old girl who became addicted to playing online video game Fortnite told of their horror at learning she had been secretly staying up all night on her Xbox.
As her mother and father slept, the primary school pupil became so immersed in the violent online world she would wet herself rather than take a break to go to the toilet.
In a stark illustration of how the hugely popular kill-or-be-killed game is affecting children, her parents said concerned teachers raised the alarm after their daughter began falling asleep in class.
The family enlisted the help of an addiction expert, who told the Mail he believed many more parents were unaware that their children were hooked on gaming right under their noses.
"Young children's brains are being pitted against the most compulsive game that Silicon Valley can put together, and it's no contest," said Steve Pope.