A father has been jailed for eight years for killing his five-week-old daughter who screamed while he played a computer game.
Mark Sandland suddenly lost his temper at his flat in East Sussex, where he picked up Aimee-Rose and violently shook her.
The 28-year-old later told officials he had suffered an epileptic fit and had regained consciousness to find the baby trapped underneath him.
Lewes Crown Court heard Sandland, of St Leonards-on-Sea, had logged onto a website offering tips on how to play Assassin's Creed 3 on November 5, 2012.
The prosecutor, Sally Howes QC, said there would have been little point in him reading the site's step-by-step instructions unless he was playing the game at the time.
The court was told Sandler dialled 999 less than 20 minutes after accessing the website, telling the operator he had suffered a fit.
But the judge, Mr Justice Sweeney, said: "It's obvious that ... you appreciated what you had done and ... lied and sought to cover up what had actually happened."
Dr Hannah Cock, a consultant neurologist, found it was "highly unlikely" that a seizure contributed to Aimee-Rose's injuries.
Miss Howes added: "Even if he had fallen on to Aimee-Rose, her pattern of injuries is not consistent with a fall and crushing alone.
"Dr Cock would have expected more disturbance to adjacent furniture than reported."
The court also heard about a text message sent by Aimee-Rose's mother to Sandland on the day of the attack, in which she asked how her daughter had been while she attended the first class of her university course.
She received a reply which read: "She hasn't shut up since about half an hour after you left."
Sandland, who will serve half his sentence before being released from jail on licence, was charged with murder but pleaded guilty to manslaughter on the grounds of lack of intent.
The judge said the attack was a "momentary" event that was not pre-meditated.
However, he said there were a number of aggravating factors, including that Aimee-Rose was a vulnerable child and that Sandland was in a position of trust, had lied to authorities and had shown no real remorse.
