I always seem to notice in counter strike source,there are so many new features.There's so many things I seem to notice.1 thing I notice is that whenever I'm hit,there is a little patch of blood in the part of the body you are hit at.The 2nd thing I can notice is that whenever you die,you don't die stiff,you die in a different way!In counter strike source they put in a ragdoll feature so you don't die stiffly (which isn't real)!Remember,in counter strike,you die fainting in a straight position!