A trucker who caused a fatal motorway pile-up was playing a game on his mobile phone seconds before the smash.
James Majury killed Anne Kerr, 50, and 14-year-old Joe Cairns when he ploughed into their school minibus. Five others in multiple vehicles were hurt.
Majury, who was warned he faces a long jail sentence, had been playing Hustle Castle as well as using apps before the horrific crash in January last year.
Prosecutor Francis McEntee told a court the 32-year-old had been “voluntarily distracted”.
He added: “It was not simply text messages but access to Sky Sports, Facebook and Hustle Castle which is a fantasy game.
"The defendant reacted no more than half a second before the point of contact.”
Majury, of Coppull, Lancashire, admitted causing death and serious injury by dangerous driving in the smash on the M58 at nearby Bickerstaffe.
Preston crown court judge Robert Altham told him he faced “a considerable period ot time” in jail.
He was remanded in custody and will be sentenced on March 31.
Anne, from Radcliffe, Gtr Manchester, worked at Pontville School in Ormskirk, Lancs, where Joe, of Southport, Merseyside, was a pupil.
Relatives of both victims were in court.
Majury’s lawyer James Ageros QC said: “He would like to express his remorse and regret for his actions and for their tragic loss. The events themselves have had a severe impact on Mr Majury.”
Francis McEntee, prosecuting, said the Crown's case was Majury was "voluntarily distracted" for a lengthy period up to and including the collision in which he reacted "no more than half a second" before impact.
Messages were also exchanged during the defendant's journey on the morning of January 8.
Majury was remanded in custody by Judge Robert Altham and told to expect a lengthy jail sentence on March 31.
