The suspect is accused of fatally shooting Raymond Galloway while he was sleeping about 5:50 a.m. Sunday after the two got into an argument related to the gaming system, the Chicago Tribune reported.
Police said the 13-year-old, who has been charged as a juvenile with first-degree murder, admitted to the crime while his mother was present.
It was unclear where the boy got the gun. No adults have been charged in the case.
Celebrity Families of 2014 [PHOTOS]