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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 Version 1.25b is now available for download!

Version 1.25b is now available for download!

Apr 15, 2008 4 comments

The ZP Team has been hard at work with the version 1.21 source code, and with the help of several server admins (and the public) we have fixed a few problems...

August Media Release

August Media Release

Aug 31, 2006 2 comments

Hello all, Here were are again with another monthly media release. This time we decided to try something new and offer our viewers a panoramic view of...

Contagion - Build 4366 Out Now, Release date announced, and more!

Contagion - Build 4366 Out Now, Release date announced, and more!

Feb 24, 2014 4 comments

It is with great pleasure that we can finally and confidently announce our Full Release and depart "Early Access" in today's News Post as well as share...

Contagion - Update Build 4209 & FF Ep16

Contagion - Update Build 4209 & FF Ep16

Feb 7, 2014 8 comments

We're reaching the hilltop and are moving towards a steadier pace of releases... Big releases! This one in particular is one of the major ones for the...

Contagion at Pax Prime!

Contagion at Pax Prime!

Aug 28, 2012 9 comments

We will be attending PAX Prime this year showing off the latest Contagion has to offer! Come by our booth #6417 for a chance at a hands-on demo and some...

Contagion Kickstarter & Full Trailer!

Contagion Kickstarter & Full Trailer!

Sep 13, 2013 18 comments

Our Kickstarter is live! We feel it's finally time to release Contagion out on the world but we need your help! Check out our new trailer and donate if...

Contagion Prize Giveaway!

Contagion Prize Giveaway!

Sep 6, 2012 4 comments

Do you play League of Legends? Want a chance to win a free character skin? Check here to find out how to win!

Contagion's Steam Shop, Release Announcement, and Official Group!

Contagion's Steam Shop, Release Announcement, and Official Group!

May 18, 2013 12 comments

Hot off the presses! We have some updates on the happenings over at Monochrome LLC including: Contagion's Steam Shop, Fall 2013 Release Announcement...

Developer stories #2 (Level design - Shreddingfield)

Developer stories #2 (Level design - Shreddingfield)

May 5, 2009 7 comments

Here is another ZPS developer story to give you insight as to what kind of challanges and tasks our developers might have to face in daily modding life.

Developer Stories 3

Developer Stories 3

Jul 17, 2009 8 comments

A short story about the development of ZPS. This story is about the time surrounding our release.

Developer stories, plus a peek at what's coming up

Developer stories, plus a peek at what's coming up

Nov 19, 2008 0 comments

The first of many stories to come from the development process of the Zombie Panic! Source team, as well as a few details on what to expect next, and...

Gamefire Interview and details of upcoming patch

Gamefire Interview and details of upcoming patch

Mar 21, 2008 5 comments

Gamefire.com Interviews Tatsur0 of Zombie Panic: Source

Half-Life Creations & INX Present "Got Brains" ZPS Competition

Half-Life Creations & INX Present "Got Brains" ZPS Competition

Jan 31, 2010 7 comments

Half-Life Creations is holding a INX Sponsored ZPS Competition titled "Got Brains"

Happy Birthday ZPS! 2 Years Old Today!

Happy Birthday ZPS! 2 Years Old Today!

Dec 28, 2009 23 comments

It was exactly 2 years ago today that Zombie Panic: Source was released to the public and we have ModDB to thank for a lot of its success...

Happy Easter from ZP Team

Happy Easter from ZP Team

Mar 24, 2008 1 comment

Sneak Peak media to help fill those Easter baskets.

Happy Holidays!

Happy Holidays!

Dec 24, 2007 8 comments

Wishing everyone a happy holidays with some media and news.

INDIEpendence Day Giveaway

INDIEpendence Day Giveaway

Jul 3, 2013 6 comments

We've hit 3,000+ Members on our Official Steam Group thanks to all of our fans support and to celebrate that accomplishment as well as Independence Day...

January Media and Developer Discussion

January Media and Developer Discussion

Jan 17, 2009 14 comments

Zombie Panic: Source January media release followed up with a chance to ask the developers the current progress and future of ZPS.

July Media Release

July Media Release

Jul 31, 2006 10 comments

Hello all, We've kept our promise and are releasing yet another media release only a month after our last which was huge. We plan to continue releasing...

Level Design Competition Winners!

Level Design Competition Winners!

Aug 10, 2008 17 comments

We present to you the winners of the Level Design competition held for Zombie Panic! Source, hosted by the ZP Development team, Noesis Interactive, and...

Level Design Deadline Extension

Level Design Deadline Extension

Jun 29, 2008 1 comment

ZP Dev Team is sorry for the delay on the OB LD specific release. But it'll be out soon and so we are extending the deadline to give everyone the time...

New Blood

New Blood

Jul 9, 2006 0 comments

As you all should now know, things are definately moving forward and we have more to show and will do so very soon. We are looking for more talent to...

Official Limited Edition ZPS T-Shirt Design Contest

Official Limited Edition ZPS T-Shirt Design Contest

Feb 3, 2009 3 comments

After years of fans asking for ZP merchandise, we're finally doing something about it and asking the community to participate.

Official ZPS "Mappers Remix" Competition comes to a close

Official ZPS "Mappers Remix" Competition comes to a close

May 21, 2009 6 comments

The Official Zombie Panic: Source "Mappers Remix" Level Design competition has finished and now the entries will be reviewed and winners announced shortly...

Official ZPS Comic

Official ZPS Comic

Feb 8, 2010 20 comments

An artists interpretation of where it all began for Eugene, Marcus, and Jessica...

Official ZPS Mappers Remix Competition

Official ZPS Mappers Remix Competition

Jan 10, 2009 5 comments

The Official ZPS "Mappers Remix" Level Design Competition. 2 Maps to choose from, 2 chances to win, $600 to the winners!

Official ZPS Trailer

Official ZPS Trailer

Nov 9, 2008 60 comments

Enjoy our Official Zombie Panic: Source Trailer (Special thanks to James "Monkey-Junkie" McVinnie

Playtesting Try out Clan

Playtesting Try out Clan

Apr 28, 2008 6 comments

With the dev team spending an excessive amount of hours working on the content expansion we are in the need of some new testers. In the past we have had...

Progress

Progress

May 20, 2006 2 comments

Hello Zombie Panic Community! It's been about a month since we informed the community that we had a new programmer begin working on ZP:S, and so...

Steam to host Zombie Panic! Source and automatic updates next week!

Steam to host Zombie Panic! Source and automatic updates next week!

Sep 26, 2008 11 comments

Valve has announced that we are to be one of five mods chosen to be hosted on Steam itself. In short, this means that you can expect automatic updates...

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Platform
Windows
Developer
Monochrome LLC
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Official Page
Zombiepanic.org
Release Date
Released Dec 27, 2007
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