Although it may not be amazing, if you are dying to play a game with friends this is really easy to use.

Co-op is so easy to set up, multiplayer online is also great.

This may not have great multiplayer support, but it's pretty easy to find a game and nothing beats playing with friends.

Although making a server for this game may be difficult, there is always a server open for you to join with your friends.

Great multiplayer support it works everytime!

OMG this game was made on it's multiplayer. Never problems, always flawless.

There is always a server to play on and your friends can join you easily from the steam friend system.

Just set up a lobby with your friends and away you go, no need to set up external servers.

Multiplayer at the click of a button and it works so well too.

There is always a server open for you and your friends to join, I personally have played a lot of this game and multiplayer is so easy to set up.