Counter strike is an immensely popular video game series that include multiplayers. There are different teams of terrorists, spreading terror and there are teams of defenders that counteract these terrorists. Gooseman and Jess Cliffe originally made it in 1999. A year later, Valve bought the game and has worked to improve it since. Its latest release was Global offensive, back in 2012.
A number of developers including Nexon and Turtle Rock Studios collaborated with Valve Corporation to develop and improve the game. Over the years, the original developers left Valve and created their own game by the name of Tactical Intervention.
