ELYRIA, Ohio – Although a teenager's obsession with a violent video game may have warped his sense of reality, the boy is guilty of murdering his mother and wounding his father after they took "Halo 3" away from him, a judge ruled Monday.

"I firmly believe that Daniel Petric had no idea at the time he hatched this plot that if he killed his parents they would be dead forever," Lorain County Common Pleas Judge James Burge said.

Nonetheless, Burge rejected the defense attorneys' argument that Petric, 17, was not guilty by reason of insanity.

Petric may have been addicted, but the evidence also showed he planned the crime for weeks, said Burge, who found the teenager guilty of aggravated murder, attempted aggravated murder and other charges.