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 new features, impressive visuals, and atmospheric maps. More importantly ZP:S will not force players to fend against dumb and predictable AI and keep the same intense thrill of surviving against intelligent and persistent player controlled zombies as the original.

Posted | Game Title | Author
Contagion's Steam Shop, Release Announcement, and Official Group!
Half-Life 2

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

May 18, 2013 Zombie Panic: Source 9 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...

 Version 1.25b is now available for download!
Half-Life 2

Version 1.25b is now available for download!

Apr 15, 2008 Zombie Panic: Source 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...

Level Design Competition Winners!
Half-Life 2

Level Design Competition Winners!

Aug 10, 2008 Zombie Panic: Source 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...

Steam to host Zombie Panic! Source and automatic updates next week!
Half-Life 2

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

Sep 26, 2008 Zombie Panic: Source 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...

Zombie Panic! Source 1.5 Now available via steam!
Half-Life 2

Zombie Panic! Source 1.5 Now available via steam!

Jan 29, 2009 Zombie Panic: Source 34 comments

Announcing the release of ZPS 1.5 via steam! Go experience the new barricade system, and our latest map updates, as well as ZPO_Harvest!

Zombie Panic! Source 1.5.2 update is now live on Steam!
Half-Life 2

Zombie Panic! Source 1.5.2 update is now live on Steam!

Apr 7, 2009 Zombie Panic: Source 23 comments

A minor release is now available via steam, including map updates, minor exploit fixes, and an option to enable the old popular collision system!

ZPS 1.6 is out now!  Get it via Steam!
Half-Life 2

ZPS 1.6 is out now! Get it via Steam!

Jun 26, 2009 Zombie Panic: Source 15 comments

We just released 1.6 to Valve. This includes a hardcore option, as well as dual slot weapons and a few other features.

Developer Stories 3
Half-Life 2

Developer Stories 3

Jul 17, 2009 Zombie Panic: Source 8 comments

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

Zombie Panic: Source Release Date
Half-Life 2

Zombie Panic: Source Release Date

Dec 15, 2007 Zombie Panic: Source 29 comments

The ZP:S Team is proud to announce Zombie Panic: Source Release Date

Happy Holidays!
Half-Life 2

Happy Holidays!

Dec 24, 2007 Zombie Panic: Source 8 comments

Wishing everyone a happy holidays with some media and news.

Zombie Panic: Source Released!
Half-Life 2

Zombie Panic: Source Released!

Dec 29, 2007 Zombie Panic: Source 31 comments

On Dec 28th, 2007 Zombie Panic: Source Released their first public beta.

Zombie Panic: Source v1.01b Fullbuild & Patch
Half-Life 2

Zombie Panic: Source v1.01b Fullbuild & Patch

Jan 12, 2008 Zombie Panic: Source 11 comments

Zombie Panic: Source v1.01b Fullbuild and Patch released today!

Zombie Panic: Source Linux Server files released!
Half-Life 2

Zombie Panic: Source Linux Server files released!

Jan 15, 2008 Zombie Panic: Source 0 comments

Zombie Panic: Source has finally released their Linux Server files with a complete Linux package for v1.01b.

Zombie Panic: Source v1.2b Fullbuild & Patch
Half-Life 2

Zombie Panic: Source v1.2b Fullbuild & Patch

Feb 16, 2008 Zombie Panic: Source 6 comments

Zombie Panic: Source v1.2b is now available for download!

Gamefire Interview and details of upcoming patch
Half-Life 2

Gamefire Interview and details of upcoming patch

Mar 21, 2008 Zombie Panic: Source 5 comments

Gamefire.com Interviews Tatsur0 of Zombie Panic: Source

ZPS Level Design Competition
Half-Life 2

ZPS Level Design Competition

May 13, 2008 Zombie Panic: Source 14 comments

The Zombie Panic team is holding a Level Design competition and awarding the winners Cash, Games, DVD Tutorials from NOESIS and more.

Zombie Panic: Source on Steam
Half-Life 2

Zombie Panic: Source on Steam

Oct 3, 2008 Zombie Panic: Source 14 comments

The latest version of Zombie Panic: Source is now available on Steam!

ZPS Halloween Costume Contest!
Half-Life 2

ZPS Halloween Costume Contest!

Oct 31, 2008 Zombie Panic: Source 11 comments

It's that time of year again (my favorite time of year) and the Zombie Panic! Source team is holding a Halloween Costume Contest with cash and other prizes...

Official ZPS Trailer
Half-Life 2

Official ZPS Trailer

Nov 9, 2008 Zombie Panic: Source 60 comments

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

Zombie Panic! Source v1.4 out now!
Half-Life 2

Zombie Panic! Source v1.4 out now!

Nov 11, 2008 Zombie Panic: Source 22 comments

Zombie Panic! Source v1.4 is NOW AVAILABLE! Launch ZPS to update your client!

Official ZPS Mappers Remix Competition
Half-Life 2

Official ZPS Mappers Remix Competition

Jan 10, 2009 Zombie Panic: Source 5 comments

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

January Media and Developer Discussion
Half-Life 2

January Media and Developer Discussion

Jan 17, 2009 Zombie Panic: Source 14 comments

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

ZP:S v1.5 available January 28th!
Half-Life 2

ZP:S v1.5 available January 28th!

Jan 26, 2009 Zombie Panic: Source 49 comments

Announcing the release date and details of Zombie Panic: Source v1.5 which will be available on Steam January 28th!

Official Limited Edition ZPS T-Shirt Design Contest
Half-Life 2

Official Limited Edition ZPS T-Shirt Design Contest

Feb 3, 2009 Zombie Panic: Source 3 comments

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

ZP:S v1.5.1 Patch Released!
Half-Life 2

ZP:S v1.5.1 Patch Released!

Feb 6, 2009 Zombie Panic: Source 12 comments

Zombie Panic: Source version 1.5.1 patch was released today fixing map, weapon, and console command exploits.

Official ZPS "Mappers Remix" Competition comes to a close
Half-Life 2

Official ZPS "Mappers Remix" Competition comes to a close

May 21, 2009 Zombie Panic: Source 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...

ZPS "Mappers Remix" Club Zombo Winners
Half-Life 2

ZPS "Mappers Remix" Club Zombo Winners

May 29, 2009 Zombie Panic: Source 8 comments

The Official Zombie Panic: Source "Mappers Remix" Level Design Competition ended and winners for Club Zombo selected.

ZPS v2.0 Release Date and Halloween Contest
Half-Life 2

ZPS v2.0 Release Date and Halloween Contest

Oct 2, 2009 Zombie Panic: Source 13 comments

Announcing Zombie Panic! Source v2.0 Release Date and to celebrate 5 years of Zombie Panic as well as Halloween we're holding an Official Halloween Prop...

ZPS v2.0 Sneak Peak + NOESIS Interactive Details
Half-Life 2

ZPS v2.0 Sneak Peak + NOESIS Interactive Details

Oct 6, 2009 Zombie Panic: Source 3 comments

Showing you a sneak peak at ZPS v2.0 as well as an update to this years Official ZPS Halloween Prop Modeling Contest.

ZPS Release almost here and Halloween Contest coming to a close
Half-Life 2

ZPS Release almost here and Halloween Contest coming to a close

Oct 17, 2009 Zombie Panic: Source 29 comments

ZombiePanic! Source v2.0 Release almost here and our Halloween Contest is coming to a close.