Controversy because of counter strike

The game faced controversy in April 2007 when lawyer Jack Thompson predicted that the perpetrator of the Virginia Tech Massacre had been trained to kill in the game, well before Seung Hui-Cho (the shooter) was identified.

Jack Thompson explains that "Counter-Strike Half-Life" was the game Seung Hui-Cho, the perpetrator of the Virginia Tech Massacre trained on in High School, suggesting that the behavior of the NIU shooter had the same sort of training.

Thompson went on to say that "In real life, Kazmierczak - who had become "erratic" recently after shunning medication for an undisclosed illness - purchased weapons like those used in Counter-Strike, including a Glock handgun and a pump-action Remington shotgun, which he bought legally on Feb. 9.

On January 17, 2008, a Brazilian federal court order prohibiting all sales of Counter-Strike and Everquest and imposing the immediate withdrawal of these from all stores began to be enforced. The federal Brazilian judge, of the Minas Gerais judiciary section, ordered the ban in October 2007 because, according to him, the games "bring immanent stimulus to the subversion of the social order, attempting against the democratic and rightful state and against the public safety