Versus I can say is a very fun and competitive part of L4D. However, the people who are allied or opposed can be typical. For people who haven't tried versus that much, be cautious who you might be playing with.They are entirely different in campaign and survival mode. Rather they can affect your emotions or how you play. The competitive act of versus changes the minds of people; to act more dominant, angry within power, or have the act of stupidity. For example, I recently played versus not too long ago and I decided to stop playing versus for a while. The reason why was the admin became too much in power with the act of arrogance and became very disrespectful to other players!! (If you see the name "Adam's Regrown Rib" in a versus game, I recommend you would leave now before anything happens. He's a very corrupt admin thats in this wonderful game). I do talk a bit bias but my point is to be cautious what players you encounter. Although the whole concept of versus is to stay as a team, your team or even the other team can collapse within those aspect of people. In other words, versus is very fun and recommandable; however, the community of versus can be very hazardous upon you. Have emotions tough enough first and have fun!