High street store Dixons has withdrawn the video game Manhunt after a mother said the computer images drove a teenager to murder her son.
Stefan Pakeerah, 14, was repeatedly battered with a claw hammer and stabbed to death after being lured to a local park.
Seventeen-year-old Warren Leblanc pleaded guilty to murder at Leicester Crown Court.
The court heard in graphic detail how the defendant had armed himself with two weapons and killed his victim "in cold blood".
Moments later he confessed to the killing in Leicester when found covered in blood by two police officers.
The prosecution said Leblanc had planned to rob his younger friend to help repay a drugs debt.
But following the hearing, Stefan's parents said Leblanc had mimicked a horrific game in which the players score points for violent killings.
His grieving mother, Giselle, said: "I think that I heard some of Warren's friends say that he was obsessed by this game.
"To quote from the website that promotes it, it calls it a psychological experience, not a game, and it encourages brutal killing.
"If he was obsessed by it, it could well be that the boundaries for him became quite hazy."
His father, Patrick, added outside court: "They were playing a game called Manhunt. The way Warren committed the murder this is how the game is set out killing people using weapons like hammers and knives.
"There is some connection between the game and what he has done
Stefan Pakeerah, 14, was repeatedly battered with a claw hammer and stabbed to death after being lured to a local park.
Seventeen-year-old Warren Leblanc pleaded guilty to murder at Leicester Crown Court.
The court heard in graphic detail how the defendant had armed himself with two weapons and killed his victim "in cold blood".
Moments later he confessed to the killing in Leicester when found covered in blood by two police officers.
The prosecution said Leblanc had planned to rob his younger friend to help repay a drugs debt.
But following the hearing, Stefan's parents said Leblanc had mimicked a horrific game in which the players score points for violent killings.
His grieving mother, Giselle, said: "I think that I heard some of Warren's friends say that he was obsessed by this game.
"To quote from the website that promotes it, it calls it a psychological experience, not a game, and it encourages brutal killing.
"If he was obsessed by it, it could well be that the boundaries for him became quite hazy."
His father, Patrick, added outside court: "They were playing a game called Manhunt. The way Warren committed the murder this is how the game is set out killing people using weapons like hammers and knives.
"There is some connection between the game and what he has done
