from mouse movements Counterstrike looks like a kind of monotone game. Never really played it so I don't know, but from screens that sure looks like that.
It's an fps. The mouse is always in the center of the screen. I'm not sure what causes the lines coming away from the center.
Going to the main menu, mouse lag, buy menu, etc. would probably cause that.
Your crosshair is always in the center, but not always the mouse pointer.