CS:GO is one of those games that has a really dedicated and rabid fan-base thanks to incredible success of Counter-Strike1.6. Released in 2012 and eight years later, the fast-paced PC game still mostly holds its own against more modern titles, partly because of its established core gameplay and huge active community.
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I personally recommend everyone to download and play toon blast and tic tac toe. It's too awesome, better than any other PC game. The day I played this game, I literally got so much addicted that I cannot express myself now.