<b>Versus Survival</b>
The first Survivor team sets the time. The second team tries to beat it. Then the first team tries to beat the second team's time. Then the second team tries to beat the first team's time. And then the... you get the idea. Rounds keep switching until someone fails to beat the previous time.

This is a great way to try Versus. Rounds are only as long as you can keep beating each other’s times. There are no rushing Survivors. Infected spawns get quicker as the time increases. It is mayhem filled with all the weapon perks and items. What’s not to like? Give it a try.

<b>Next Mutation For the Loners?</b>
For the next mutation, do you prefer Lone Gunman or Last Man on Earth? Let us know.

Versus Survival
The first Survivor team sets the time. The second team tries to beat it. Then the first team tries to beat the second team's time. Then the second team tries to beat the first team's time. And then the... you get the idea. Rounds keep switching until someone fails to beat the previous time.

This is a great way to try Versus. Rounds are only as long as you can keep beating each other’s times. There are no rushing Survivors. Infected spawns get quicker as the time increases. It is mayhem filled with all the weapon perks and items. What’s not to like? Give it a try.

Next Mutation For the Loners?
For the next mutation, do you prefer Lone Gunman or Last Man on Earth? Let us know.

<b>Four Swordsmen of the Apocalypse</b>
Four Swords against plenty of apocalypse!

Armed with only swords the survivors face near continuous streams of Special Infected ready to be sliced and diced.

<b>DLC Date</b>
Now that we have a solid version of the maps (some minor changes still coming), we are focused on the DLC and getting some pesky bugs out of the shipping version. As soon as we have a release date we will let you know.

<b>Upcoming Mutations</b>
Thursday we <a href ="https://twitter.com/#!/l4ddev">tweeted</a> out a request for the next mutation. Minutes later we had a request for Four Swordsmen and just as we said it aloud we decided to load it up and check it – it had been awhile and we have some new members of our team.

Four hours later we realized we better ship this since it‘s what we tested. So while it only has three votes, we will take the top tweets for upcoming Mutations. Right now we are leaning towards Versus Survival. A team favorite as well.

Four Swordsmen of the Apocalypse
Four Swords against plenty of apocalypse!

Armed with only swords the survivors face near continuous streams of Special Infected ready to be sliced and diced.

DLC Date
Now that we have a solid version of the maps (some minor changes still coming), we are focused on the DLC and getting some pesky bugs out of the shipping version. As soon as we have a release date we will let you know.

Upcoming Mutations
Thursday we tweeted out a request for the next mutation. Minutes later we had a request for Four Swordsmen and just as we said it aloud we decided to load it up and check it – it had been awhile and we have some new members of our team.

Four hours later we realized we better ship this since it‘s what we tested. So while it only has three votes, we will take the top tweets for upcoming Mutations. Right now we are leaning towards Versus Survival. A team favorite as well.

<b>Hard Eight!!</b>
Double the specials, quadruple the fun!

Face eight Special Infected at one time, this is double the standard number! And if that wasn’t trouble enough, we also increase the spawning frequency so it is raining Specials.

Why aren’t you going to give it a try? Scared?

<b>More Cold Stream</b>
Today we are releasing some bug and exploit fixes on the PC for Blood Harvest.

We have to thank everyone for their feedback and help catching these issues and making the campaigns better but we want to give a special thanks to Tabbernaut from the Steam forums for providing a concise lists of issues.

We still have a few minor fixes and performance improvements for the Cold Stream Campaign. We are going to be releasing those changes in a few weeks as the final build for the DLC.

On the 360 side we have been making some additional performance improvements. The finale section of Cold Stream in particular was a sticky area to pull off. Not only do we have to worry about view distances but the way the common infected move and navigate areas.

One of the results of our extensive performance tuning of the Cold Stream campaign is that we will be writing up and sharing some information with modders on improving the performance of their campaigns.

So enjoy Hard Eight and in a few weeks we will have another content update as we prepare Cold Stream to go into the Xbox 360 certification process.

Hard Eight!!
Double the specials, quadruple the fun!

Face eight Special Infected at one time, this is double the standard number! And if that wasn’t trouble enough, we also increase the spawning frequency so it is raining Specials.

Why aren’t you going to give it a try? Scared?

More Cold Stream
Today we are releasing some bug and exploit fixes on the PC for Blood Harvest.

We have to thank everyone for their feedback and help catching these issues and making the campaigns better but we want to give a special thanks to Tabbernaut from the Steam forums for providing a concise lists of issues.

We still have a few minor fixes and performance improvements for the Cold Stream Campaign. We are going to be releasing those changes in a few weeks as the final build for the DLC.

On the 360 side we have been making some additional performance improvements. The finale section of Cold Stream in particular was a sticky area to pull off. Not only do we have to worry about view distances but the way the common infected move and navigate areas.

One of the results of our extensive performance tuning of the Cold Stream campaign is that we will be writing up and sharing some information with modders on improving the performance of their campaigns.

So enjoy Hard Eight and in a few weeks we will have another content update as we prepare Cold Stream to go into the Xbox 360 certification process.

<b>Gib Fest</b>
Blast the infected to shreds with M60s.

Swords can slice up some fun. Chainsaws can tear apart the infected. But you need to get close for both and well… chainsaws are really loud! Time to go with the ultimate gun, you and three friends armed with M60s and unlimited ammo. This is going to get messy.

<b>Cold Stream</b>
As we recently posted on our blog, we are busy working on the full Cold Stream DLC which will include Cold Stream, Blood Harvest, Crash Course, Dead Air, Death Toll, and No Mercy. We will be updating Campaigns on Steam with bug fixes as we get ready to ship the DLC.

Check the release notes as the list of fixes is extensive. The Xbox 360 will get Campaigns with the bug fixes at a future date.

Gib Fest
Blast the infected to shreds with M60s.

Swords can slice up some fun. Chainsaws can tear apart the infected. But you need to get close for both and well… chainsaws are really loud! Time to go with the ultimate gun, you and three friends armed with M60s and unlimited ammo. This is going to get messy.

Cold Stream
As we recently posted on our blog, we are busy working on the full Cold Stream DLC which will include Cold Stream, Blood Harvest, Crash Course, Dead Air, Death Toll, and No Mercy. We will be updating Campaigns on Steam with bug fixes as we get ready to ship the DLC.

Check the release notes as the list of fixes is extensive. The Xbox 360 will get Campaigns with the bug fixes at a future date.

<center><img src="http://www.l4d.com/blog/images/posts/086/jockeyreindeer.jpg"></center>

If you have been playing Left 4 Dead 2 for a bit, you probably have your own lists of who is naughty and who is nice. We already make it easy for you to track who is being nice – we have the Steam Friends list. But we know people can rage, players can grief, and some people… well some people you just don’t want to play another game with.

For those special people, we have the blocked list. Think of it as your own personal naughty list. Not only will those people not be getting gifts from you this holiday season, they also won’t be joining you in any games, reindeer or otherwise.

Once you add someone to your blocked list, they will not be able to join your game. This means they are blocked through the lobby interface, the server browser, the recently played list, and even direct connecting. They are gone from your life.

This does also mean if a friend invites them to your game, they will be blocked. It also prevents you from joining a game where there is a player you have blocked. If it was a mistake or you kissed and made up, you can always unblock them and everything will return to normal.

How do you block someone? You can simply block any user from within the Steam Community page, Steam chats, or your Steam Friends list. Players can also be blocked while in a game via the Steam Overlay, which provides an easy path to both locate and block current and recent players from joining your future matches.

Don’t worry about offending someone with your block. As always, your blocks are private. Only you can see the list of people you’ve blocked. And again, don’t worry about making a mistake blocking, you can always unblock someone at any time.

What games will support your block? Left 4 Dead 2 is the first. We want to test it here. CS:GO will be next and then we will continue to add games that use Steamworks matchmaking.

So now that you have your lists, what about gifts for you in today’s updates?

First we have some bug fixes. We have a fix for the problem of Tanks not consistently spawning in the finales. Prodigysim (once again) correctly identified when the issue was introduced and helped us track it down. Thanks!

We fixed the problem of dying when you win Death Toll and we mixed up the distribution of melee weapons in the new campaigns (we do read the forums) .

We are also back with custom campaigns. Today we are adding I Hate Mountains to the rotation and have an updated version of Suicide Blitz 2. If you missed it, RT Frisk made a special version of Suicide Blitz 2 to help with a <a href='http://www.youtube.com/watch?feature=player_embedded&v=2Eeq0QD7Epg'>marriage proposal.</a> Ohh…

Lastly… well what are those things in Versus? What’s this new achievement? You’re gonna have to play a round and find out.

<center></center>

If you have been playing Left 4 Dead 2 for a bit, you probably have your own lists of who is naughty and who is nice. We already make it easy for you to track who is being nice – we have the Steam Friends list. But we know people can rage, players can grief, and some people… well some people you just don’t want to play another game with.

For those special people, we have the blocked list. Think of it as your own personal naughty list. Not only will those people not be getting gifts from you this holiday season, they also won’t be joining you in any games, reindeer or otherwise.

Once you add someone to your blocked list, they will not be able to join your game. This means they are blocked through the lobby interface, the server browser, the recently played list, and even direct connecting. They are gone from your life.

This does also mean if a friend invites them to your game, they will be blocked. It also prevents you from joining a game where there is a player you have blocked. If it was a mistake or you kissed and made up, you can always unblock them and everything will return to normal.

How do you block someone? You can simply block any user from within the Steam Community page, Steam chats, or your Steam Friends list. Players can also be blocked while in a game via the Steam Overlay, which provides an easy path to both locate and block current and recent players from joining your future matches.

Don’t worry about offending someone with your block. As always, your blocks are private. Only you can see the list of people you’ve blocked. And again, don’t worry about making a mistake blocking, you can always unblock someone at any time.

What games will support your block? Left 4 Dead 2 is the first. We want to test it here. CS:GO will be next and then we will continue to add games that use Steamworks matchmaking.

So now that you have your lists, what about gifts for you in today’s updates?

First we have some bug fixes. We have a fix for the problem of Tanks not consistently spawning in the finales. Prodigysim (once again) correctly identified when the issue was introduced and helped us track it down. Thanks!

We fixed the problem of dying when you win Death Toll and we mixed up the distribution of melee weapons in the new campaigns (we do read the forums) .

We are also back with custom campaigns. Today we are adding I Hate Mountains to the rotation and have an updated version of Suicide Blitz 2. If you missed it, RT Frisk made a special version of Suicide Blitz 2 to help with a marriage proposal. Ohh…

Lastly… well what are those things in Versus? What’s this new achievement? You’re gonna have to play a round and find out.