I suggest picking this little guy up. Many different modes, easily changeable variables, and endless amounts of skill to gain.
http://steamcommunity.com/sharedfiles/f ... =241148414
My Go:
[youtube]https://www.youtube.com/watch?v=rIPIPY2Z_YI&feature=youtu.be[/youtube]
Also, can we please add a CS:GO section the forum?