On 9 April 2011 in Alphen Aan Den Rijn , The Netherlands , 24-year-old Tristan van der Vlis opened fire in a shopping mall , releasing more than a hundred bullets with a semi-automatic rifle and a handgun , killing 6 people and wounding 17 others , after which he also killed himself . A fair amount of attention was given to Van Der Vlis ' playing of '' Call of Duty : Modern Warfare 2 '' and to the alleged similarities between the events in Alphen a/d Rijn and the controversial " No Russian " mission in the game , where the player can choose to ( or choose not to ) partake in the killing of a large group of innocent people inside an airport terminal . On 22 July 2011 , Anders Behring Breivik perpetrated the 2011 Norway attacks , detonating a car bomb in the executive government quarter , and then travelled to a summer camp for teenagers , where he proceeded to stalk and kill a large number of people . Seventy-seven people were killed in the attacks , a majority of them being teenagers who were at the summer camp . Hundreds were injured by the car bomb explosion . Breivik himself admitted in court that he had deliberately used the 2009 video game '' Call of Duty : Modern Warfare 2 '' to train for the attacks , specifically by practicing his aim using a " holographic aiming device " . He stated in his manifesto that he had been planning the attacks since 2002
2011 Norway attacks
2011 Norway attacks
Video game controversies