Counter Strike, the world's most popular first-person shooter game. Arguably over 2 million people are playing this game at this very moment as you are reading this post. The game was developed from the old game known as Quack, which had poor graphics but was one of the most addictive games of its time. The game has had many improvements since then, at first counter strike was not known to many and it wasn't until counter strike 1.5 that people really got into this game. The next version which was condition zero was even a better version of the previous 1.5, but then 1.6 really changed things and set the standards for playing counter strike in the big leagues. The next version which was counter strike source had a completely new engine and many liked it but most did not, it is really more about what a player prefers I can play counter strike 1.6 but if someone asks me to play source I would keep playing because they are equally fun to play but again it is based on preference. The next revolution in Counter Strike is Counter Strike Global Offensive which has a touch of 1.6 and Source. So Counter Strike Global Offensive is the new thing in the world of Counter Strike and is said to be the standard game used worldwide for the big leagues like WCG.