Zombie Panic: Source is a co-op oriented Survivor Vs Zombie multi-player survival horror modification for HL2. While our main priority is to make the mod as fun to play as possible, ZP:S plans to greatly expand on the core features of "Zombie panic" For HL1, with the obvious new features, impressive visuals, and of course atmospheric maps. More importantly ZP:S will not force players to fend against dumb and predictable AI, but instead keep the same intense thrill of surviving against intelligent and persistent player controlled zombies as the original.

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The first Source-powered mods to be distributed via Steam will be released Thursday, October 2nd.

Posted by stenchy on Oct 1st, 2008

Update: Release has been postponed until tomorrow (Friday, October 3rd) due to technical difficulties. When released, you will be able to find the mods in the "uninstalled" section of your "My games" tab within Steam.

This Thursday is big. For the first time ever, mods will be delivered through Valve's digital distribution platform thus opening up new opportunities to both mods and Steam alike. Five different mods were selected to be integrated using Steamworks which helps streamline the delivery, installation, and update process. Some of the mods will even have other features like achievements and stat tracking, with others gaining added functionality in future updates. The majority of mods selected also have significant content updates, so be sure give them all a shot. Automatic installation means you have no excuse not to!

For the uninitiated, here's a quick look at the five mods that are the first to make their way onto the Steam platform:

Age of Chivalry

A story-based, objective-driven multiplayer melee mod. Siege castles, raid towns and execute peasants using an extensive FPS melee combat system. Ensure victory in a campaign that spans over several maps.

1.1 Release Screens 1.1 Promotional ScreenShots 1.1 Release Screens


Car combat on the Source engine. Rain down destruction on your opponents in the form of high explosives and machine gun fire. A wide variety of maps with plenty of destructibility. Almost no learning curve makes this mod easy to pick up and play.

Alpha testing screenshots Alpha testing screenshots Alpha testing screenshots


A realistic modern warfare shooter set within the middle east. Play as conventional military forces or the underground insurgents. Employ tactics and teamwork to capture objectives while holding out against enemy reinforcements.

Insurgency Media Update - Beta 3 Sneak Peek Insurgency 2.1 Media Update Insurgency 2.1 Media Update


The best Half-Life 2 co-op experience out there. Melded together from a smattering of smaller co-op mods. Play through custom campaigns or the entire Half-Life 2 campaign cooperatively with new features, weapons and NPCs.

Half-Life 2: Episode Two Half-Life 2: Episode Two HL2 SP

Zombie Panic: Source

The most popular Zombie mod on the Source engine. One person starts as the undead and gains new teammates with every survivor killed. Survivors must hold out against diminishing odds and constant paranoia... or find a really good hiding place.

Survivor01 Haunted Deadend

ModDB extends its congratulations to all the mod teams involved. We hope that this allows for even more people to experience and enjoy the products of your creative endeavors.

Post comment Comments  (0 - 50 of 71)
ashelia Oct 2 2008, 2:24am says:

This is definitely going to make me finally play a few of these mods. Grats to all the teams and their accomplishments!

+2 votes     reply to comment
Tharros Oct 2 2008, 3:37am replied:

Yeah, me too. There are just so many great mods around its hard too play them all.

+1 vote     reply to comment
Vejnon Oct 2 2008, 2:31am says:

For some reason I always thought "DIPRIP" meant "Die in Pain, Rest in Pieces."

I wonder why.

OT: Congratulations to the teams.

+4 votes     reply to comment
FJS Oct 2 2008, 3:38pm replied:

lol =D

+1 vote     reply to comment
taiiat Oct 7 2008, 8:34pm replied:

lol. maybe it should be that XD that sounds great as well as wat it is.

+1 vote     reply to comment
Henley Staff
Henley Oct 2 2008, 2:54am says:

Congrats guys!

+1 vote   reply to comment
AJ_Quick Oct 2 2008, 3:48am says:

and non source mods?

-1 votes     reply to comment
Henley Staff
Henley Oct 2 2008, 4:20am replied:

why would they support other games mods right now?

+4 votes   reply to comment
AJ_Quick Oct 2 2008, 9:02am replied:

Because they want to position themselves as supporters of ALL indie PC gaming , and modding ?

I hope you're aware that there are some VERY GOOD mods out there NOT using source.

-2 votes     reply to comment
xlucidx Oct 2 2008, 10:26am replied:

You're an idiot.
They're supporting mods that use their engine, it's easier for them to manage automatic updates to said mods when the mods are using Source which is directly integrated into Steam.

-3 votes     reply to comment
AJ_Quick Oct 2 2008, 10:36am buried:


no. YOU're are an idiot.

-12 votes     reply to comment
z33ky Oct 2 2008, 1:11pm replied:

It's just another downloadable file, so why would it be easier to check for updates if a certain game uses the Source-engine? Nonsense..
Also, there are many games on steam, which don't use the Source-engine.

-2 votes     reply to comment
NullSoldier Oct 2 2008, 5:20pm replied:

Why wouldn't they? As another commentor said, it's just as easy to implement updates among other things. Were talking about Valve not EA. A company who has openly supported indie gaming many times, (especially with the release of steamworks). They will most likely do this in the future for non-valve made game mods.

+5 votes     reply to comment
itchylot Oct 2 2008, 5:59am replied:

It's Valve. Obviously, they are going to cater to mods that use their proprietary engine. They're also easier to support from a technical standpoint as well.

+6 votes     reply to comment
Lucífer Oct 2 2008, 6:03am replied:

Think any game company would.
See how EA use BattleCast Primetime to showcase mods, it's great for intense because this site gets featured with every broadcast :D

0 votes     reply to comment
z33ky Oct 3 2008, 4:01am replied:

Not really, VALVe does not have the source of the mod..

0 votes     reply to comment
arkythesharky Oct 2 2008, 10:56am replied:

How many other moddable games use steamworks?

+2 votes     reply to comment
Dremth Oct 2 2008, 8:40pm replied:

these are the only ones right now.

0 votes     reply to comment
Varsity Oct 3 2008, 2:50pm replied:

Only Red Orchestra.

+1 vote     reply to comment
Lucífer Oct 2 2008, 5:40am says:

Congrats to all, even though I think another released mod thats more original than ZPS would be more deserving of this reward, congrats to them anyway...

-1 votes     reply to comment
SandeR2 Oct 2 2008, 6:16am replied:

Don't worry, more mods will be coming soon this is just the beginning :D
Finally some serious mod support via steam! go Valve!
And ZPS is an awesome mod, one of the best zombie mods out there. ;)

+2 votes     reply to comment
frikazoyd Oct 2 2008, 1:40pm replied:

Why do you think that our mod is unoriginal? We are, to date, the only mod that uses entirely player controlled zombies.

I suggest you play the mod before continuing to insult it. You might be surprised, it is very enjoyable.

+6 votes     reply to comment
Tolkienfanatic Oct 2 2008, 6:24am says:

Let's not forget that there are five more announced mods being released eventually as well.

+1 vote     reply to comment
Kamikazi[Uk] Oct 2 2008, 7:07am says:

So what time will they be on steam.

+1 vote     reply to comment
INtense! Staff
INtense! Oct 2 2008, 7:38am says:

Also we reported this 6 weeks ago Moddb.com - steam officially announced it this week.

+1 vote   reply to comment
Ennui Oct 2 2008, 3:59pm replied:

Apparently that was an unintentional leak, I'm not sure which mod but one of them got into some hot water with Valve over it afaik.

+1 vote     reply to comment
Nokiaman Oct 2 2008, 9:56am says:


0 votes     reply to comment
stonecold23 Oct 2 2008, 9:58am says:

omg i hate people saying zombie panic source isnt original! they made the zombie mod on hl and it was coppied into cs and css by people.
they invented it it its original ffs

+5 votes     reply to comment
Wilhelm_III Oct 2 2008, 12:13pm says:

I gots to play me some more INS :O I've been neglecting mods because of warhammer: age of reckoning...

+1 vote     reply to comment
z33ky Oct 2 2008, 1:09pm says:

The best Half-Life 2 co-op experience out there."
IMO Obsidian Conflict > Synergy. meh!!

+2 votes     reply to comment
FJS Oct 2 2008, 3:42pm replied:

Yes, I rather play the new Obsidian Conflict than Synergy.

+2 votes     reply to comment
LQDHelium Oct 2 2008, 3:47pm replied:

IMO synergy is a lot more polished than OC. Oh, and synergy has syn_horror, one of the best maps ever made with the source engine. IMO, obviously.

+1 vote     reply to comment
z33ky Oct 2 2008, 3:54pm replied:

I didn't want to say that OC is better than Synergy as a fact, just that it is my opinion. I wanted to point out, that "best" is a exaggeration.

+4 votes     reply to comment
JohnBart Oct 2 2008, 1:17pm says:

Congratulations to all the chosen mods. :-)

+2 votes     reply to comment
NullSoldier Oct 2 2008, 1:47pm says:

Congratulations! I'll see you all on those mods today when I get home from work. :)

And sorry but ZPS is the most polished zombie mod out there, all other Zombie mods are just not as well done all around.

+1 vote     reply to comment
Ennui Oct 2 2008, 4:01pm replied:

I dunno. ZPS seems very uninspired to me - it's really only slightly better than the CS or GM zombie survival mods, and only because it's a separate full polished mod rather than somewhat of a hack like the other two. Gameplay wise there isn't a huge difference.

Zombie Master will forever be my favorite, it's really too bad that they weren't given this opportunity.

-1 votes     reply to comment
smokeythebear Oct 2 2008, 5:03pm replied:

I don't think it matters for ZM since it never really gets updated and all the content that makes it good are addons from the community.

+2 votes     reply to comment
smfk Oct 2 2008, 2:53pm says:

I thought PVKII was going to be featured too?

+1 vote     reply to comment
stevealmighty Oct 2 2008, 3:00pm replied:

it really should be as its probably the most fun mod out there
but it has age of chivalry instead for some reason
pvkII really should be included in the future

+1 vote     reply to comment
Tatsur0 Creator
Tatsur0 Oct 2 2008, 5:11pm replied:

My guess is that we'll be seeing more of our favorite mods showing up in a future steamworks announcement. I'm at least hoping this is the case.

+1 vote   reply to comment
sonicboy3060 Oct 2 2008, 5:16pm says:

...its thursday no mods yet on steam >.>

+1 vote     reply to comment
ashelia Oct 2 2008, 5:37pm replied:

It just got delayed until tomorrow!

+1 vote     reply to comment
Mr_Inappropriate Oct 2 2008, 5:43pm replied:

thats not even funny, monique.

0 votes     reply to comment
ashelia Oct 2 2008, 7:10pm replied:

Yeah, I wish it were a joke.

+1 vote     reply to comment
z33ky Oct 2 2008, 6:31pm replied:

....well.. you know VALVe ;)

+2 votes     reply to comment
sonicboy3060 Oct 2 2008, 7:53pm says:

yep almost 7:00 pm central time still no mods so it may not be a joke.

+1 vote     reply to comment
NullSoldier Oct 2 2008, 8:20pm says:

Yeah im sitting here waiting... Whats going on?.. :(

+1 vote     reply to comment
stenchy Author
stenchy Oct 2 2008, 8:28pm replied:

Read the update at the top of the article.

+1 vote   reply to comment
BoredGunman Oct 2 2008, 8:58pm says:

Add Minerva and I'll be happy

+1 vote     reply to comment
stevealmighty Oct 3 2008, 1:56pm replied:

they wont
minerva is a completed single player mod
there would be no point in adding it

+1 vote     reply to comment
BoredGunman Oct 4 2008, 2:03am replied:

good point

+1 vote     reply to comment
Tolkienfanatic Oct 5 2008, 11:33pm replied:

You never know. Since Adam is working at Valve now it could happen.

+1 vote     reply to comment
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Released Dec 2007
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