'' Counter-Strike : Global Offensive '' is the sequel to the popular first-person shooter '' Counter-Strike : Source '' , developed by Valve Corporation . '' Global Offensive '' s development began when Hidden Path Entertainment attempted to port '' Counter-Strike : Source '' onto video game consoles prior to the end of its lifespan . During its development , Valve saw the opportunity to turn the port into a full game and expand on the predecessor 's gameplay . '' Global Offensive '' began development in March 2010 , and was revealed to the public on August 12 , 2011 . The closed beta started on November 30 , 2011 , and was initially restricted to around ten thousand people who received a key at events intended to showcase '' Global Offensive '' . After issues with client and server stability were addressed , the beta was opened up to progressively more people , and at E3 2012 , Valve announced that '' Global Offensive '' would be released on August 21 , 2012 , with the open beta starting roughly a month before that . Before the public beta , Valve invited professional '' Counter-Strike '' players to play-test the game and give feedback
E3 2012
E3 2012
Counter-Strike: Global Offensive