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.

Report content RSS feed ZPS 2.1 Released!

Zombie Panic: Source v2.1 has been packaged and sent off to Valve and we're now all eagerly awaiting to play with the community. Keep an eye open on 2.1 Steam Update!

Posted by Tatsur0 on Feb 8th, 2011

It is our pleasure to announce that earlier today we sent v2.1 of Zombie Panic: Source to Valve and are eagerly awaiting it's proper release over the steam servers! We are beyond grateful for the support the community has shown us these last 3+ years. The current team working on ZP:S and this includes the new playtesters have been at it daily with multiple tests per day 7 days a week. With v2.1 our goal was to provide as promised a more stable, enjoyable, and balanced game and we're quite confident that's exactly what we've done. We begin work on v2.2 in a few weeks to add in more features, content, as well as further improving the existing game.

For veterans of ZP:S who aren't actively playing these days I also wanted to make a point to impress that with v2.1 we made sure to bring back survival horror to the game that was lost with the popularity of the mod and box camp maps. ZP:S is once again the game that it was meant to always be due to Sammy's unique system and we've also gone through a number of our favorite maps updating them visually and fixing minor issues that may have turned off players.

Check out the Media and Changelog below-

Waitress Jessica Update





:::::Changelog v2.1:::::

+ New waitress (human and zombie)
+ New Main Menu Screen
+ Fixed Knockback
+ Prevent zombies and humans from blocking other zombie/human melee attacks
+ Recognize kill assists
+ Headbobbing is now present in the game (it's on by default, but you can switch it off in the multiplayer options)+ Add baseball bats to fgd and random_def entity
+ Official Maps Flagged.
+ non-whitey zombie claws
+ zpo_tanker update
+ zps_silence update
+ zpo_harvest update
+ zpo_biotec update
+ zps_underground added
+ zps_thrillvile added
+ zpo_murksville added
+ zps_ruralpanic added
+ Carrier roar + roar highlight feature added
+ Weapon & ammo scaling feature added (zps only)
+ New ammo weight system (30 lbs is the max)
+ Plant IED feature added
+ User who planted IED can pick it up whilst planted+ Player who planted IED if killed loses ownership of IED and it becomes a phys object again for others to pick up+ New waitress vocals
+ Infected players can't talk or drop/pick up weapons/items in 2nd phase of infection
+ Infected players can't deduct zombie lives
+ Can choose playermodel now
+ First person spectating added
+ New keyboard model
+ New Winchester reload
+ New yellow border for donors and green for playtesters.
+ Keyboard attack produces random messages
+ Minor bug fixes
+ Feed-o-meter is yellow while being drained.
+ Sv_gravity changes physics objects' gravity (Not only players)
+ If you're nearby a grenade that explodes, it shakes your screen a bit (similar to the IED screenshake)+ If you're by yourself and if you have sv_testmode 1, you spawn as the carrier if you join the zombie team+ There's a delay to suicide if you use the kill command (5 seconds)+ New entity: logic_end_game.
+ Barricades take phys damage
+ Spectators/Players in lobby are unable to talk to living players to prevent ghosting (team chat is still available)
- weapon_hammer is removed
- zpo_deadblock removed

I would also like to thank NuclearFallout for their incredible support. If it weren't for them we would not be releasing v2.1 this month. After having to switch SVN hosts and manage other issues that would have delayed us for a considerable amount of time the NFO support staff made sure our playtest server was up and running with 24/7 support. I can't thank em enough and strongly believe them to be the best out there.

See you in game!

-ZP Development Team

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Post comment Comments  (0 - 50 of 84)
Darius0101 Feb 5 2011 says:

Good to see your updating this awesome mod! Should be made into a game :D

+9 votes     reply to comment
Tatsur0 Author
Tatsur0 Feb 13 2011 replied:

Contagion-game.com the spiritual successor to ZPS

+1 vote   reply to comment
Darius0101 Feb 17 2011 replied:

Wow that looks awesome, al be tracking it on moddb!

+2 votes     reply to comment
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Darius0101 May 5 2014 replied:

Just to let you know Tatsur0, just saw this comment again 3 years later haha. I was luckily one of the few people that got a code when you were giving them out on the group page. :) Played it a bit and so far so good. Keep it up!

+1 vote     reply to comment
Poiananana Mar 7 2011 replied:

Hi guys!

Sorry if I reply to the above comment but it's the only way to add the comment on the first page and be visible...

Great to know you have updated ZP:S! Thank you!

Btw, I recently had to switch to a Mac... Do you have any plan to release it for such a platform (soon)?
I don't have any idea of the work required to achieve such a porting, so am I simply asking...

Again, thank you and keep up the good work!

+1 vote     reply to comment
Hitelf Feb 5 2011 says:

This is getting better and better :3

+4 votes     reply to comment
KEEP_IT_UP! Feb 5 2011 says:

great update :)

one thing about the "Waitress Jessica" update: her arms are a world too long :P did a little gif, couse pictures tell more then 1000 words. ;)


beside that, great model and love the details :)

+11 votes     reply to comment
DemonProwler Feb 6 2011 replied:

I also noticed a few differences between the zombie model and the survivor model.

-Survivor has a collar, zombie doesn't.
-Zombie still has the old hair whereas the Survivor's has been updated.
-Survivor has a black belt buckle, zombie has a gold one.
-Survivor's t-shirt on the arms is tight whereas the Zombie one has a gap.
-Zombie seems to have lost some fat on the hips during infection.

+3 votes     reply to comment
Falleen Feb 9 2011 replied:

Its still kind of freakishly deformed even after shortening the upper arms.

+1 vote     reply to comment
Mr_Cookies Feb 5 2011 says:

why the heck the hammer was removed ?

+1 vote     reply to comment
biodude Feb 5 2011 replied:

I guess its because it looked too much like the barricade, and was pretty useless

+6 votes     reply to comment
Rukus_ Feb 5 2011 says:

*Sees new maps and zombie attack
*zpo_deadblock removed
>:( great, another great official map I have to backup

Adding phys damage to props is a nice touch, makes mapping a whole lot easier.

+1 vote     reply to comment
wazanator Feb 6 2011 replied:

From my understanding Deadblock was removed because it was old, unbalanced and broken in some spots. Plus no one played it that much.

Perhaps someone will remake/fix it up in the future :)

Also the phys damage thing only applies to barricade boards (to help stop perm cades)

+1 vote     reply to comment
Craka_J Feb 5 2011 says:


+2 votes     reply to comment
CakeMaster7 Feb 5 2011 says:

Yay, an update!

+2 votes     reply to comment
Mr_Cookies Feb 5 2011 replied:

Yay, someone said "Yay, an update" !!!

+2 votes     reply to comment
CakeMaster7 Feb 6 2011 replied:

Yay, Someone said "Yay, someone said 'Yay, an update' !!!"

+4 votes     reply to comment
biodude Feb 5 2011 says:

Finally, non-whitey zombie hands! I knew this would eventually happen

+1 vote     reply to comment
Anddos Feb 6 2011 says:

if its released where is the download link?, the topic dosent make sense.

-4 votes     reply to comment
MARiN3 Feb 6 2011 replied:

you have to download it over steam, click "Shop" -> Search for "Zombie Panic Source" -> Install Game

+2 votes     reply to comment
Tatsur0 Author
Tatsur0 Feb 6 2011 replied:

"earlier today we sent v2.1 of Zombie Panic: Source to Valve and are eagerly awaiting it's proper release"

We have to use steamworks to compile our patch (quite large) then ship it off to Valve who then needs to release it to the public. I would wager a guess that it may not actually be available till Monday but they've surprised us before.

+1 vote   reply to comment
VulpineComplex Feb 6 2011 says:

I'm liking those maps a lot. Great work!

+2 votes     reply to comment
Tatsur0 Author
Tatsur0 Feb 6 2011 says:

Updated Changelog to reflect changes that we're overlooked when updating changelog like the ability to pick up your own planted IED, headbob(can be disabled in options), planted IEDs detaching when owner dies, and more.

+2 votes   reply to comment
Sharkz Feb 6 2011 says:

Great news, posted a small feature on the update here: Modsentry.com

Not played ZPS in ages so I'll be sure to start playing again!

+2 votes     reply to comment
JuQu Feb 6 2011 says:

I love you guys... Long live ZPS!

+4 votes     reply to comment
Mr.John Feb 6 2011 says:


+1 vote     reply to comment
azultain Feb 6 2011 says:


0 votes     reply to comment
azultain Feb 6 2011 says:

293 hours of zps, it is sure i go on the way of 300 hours

+1 vote     reply to comment
DonChubo Feb 7 2011 replied:

511 Hours docked + the time accumulated before they started tracking hours played = HOLY SH*T! :D

+2 votes     reply to comment
azultain Feb 7 2011 replied:

(héhé that why ime and my friends use xfire, the gaming hours is accumulated since 2004)

+1 vote     reply to comment
Anddos Feb 6 2011 says:

is this the latest version?


+1 vote     reply to comment
Tatsur0 Author
Tatsur0 Feb 6 2011 replied:

Waiting on Valve to update the servers. They got it Friday but they're quite busy so it's possible we won't see it till Monday. :/ Though any supporters wishing to point out that the updates live would be appreciated :D Checking my Email every 30mins.

+1 vote   reply to comment
azultain Feb 6 2011 says:

they have achievement?

+1 vote     reply to comment
wazanator Feb 6 2011 replied:

Achievements didn't get done in time for the update sorry :( (hopefully they will be ready for 2.2 )

+1 vote     reply to comment
Dnst Feb 6 2011 says:

I recommend you to update the image gallery on your steam page. The current screenshots do not fit the widescreen format of the box and a nice trailer on the beginning would bring some life to it, too.

+2 votes     reply to comment
Minuit Feb 6 2011 says:

Hey Tats, congrats to you and your team on the update. I'm actually quite interested in how the process of sending off an update to Valve works after you've had your mod integrated into Steamworks. Are you just sending off the patch file to Valve, who then take care of the rest? Do they playtest it to make sure it works? It's a pretty interesting topic, any info would be appreciated.

+2 votes     reply to comment
Tatsur0 Author
Tatsur0 Feb 6 2011 replied:

We use their tools to compile, then upload to em, they then create a beta for us to test. If everything looks ok we ask them politely to release to the public and wait. It's best to release before Superbowl Weekend. But that's basically it.

+1 vote   reply to comment
Paddy84 Feb 6 2011 says:

No Update in my Steam ;_;

+1 vote     reply to comment
wazanator Feb 6 2011 replied:

Valve doesn't work weekends normally (especially supper bowl weekend :P ) So you can probably expect it out Monday/Tuesday

+3 votes     reply to comment
Paddy84 Feb 6 2011 replied:

ah ok ^^

+1 vote     reply to comment
DarkRaidor Feb 6 2011 says:

great update!
r.i.p. hammer

+2 votes     reply to comment
biodude Feb 6 2011 says:

A g3 for a new weapon would be pretty nice

+1 vote     reply to comment
KortalMombat Feb 6 2011 says:

One worthy update a year isnt so bad i guess.

+2 votes     reply to comment
Bluedrake42 Feb 6 2011 says:


+1 vote     reply to comment
Chezzlor Feb 7 2011 says:

Excellent! I was wondering when you guys were going to update.

+1 vote     reply to comment
cinco Feb 7 2011 says:

waitress legs and arms look inhuman. zombie waitress using male skeleton. pukes.

+2 votes     reply to comment
DonChubo Feb 7 2011 says:

Thanks to everyone in the ZPS team for making this great mod. I found it almost 2 years ago (March 18th, 2009) and it cost me only about $5 to get the requirements to play it (HL2:DM). This mod alone is pratically the main reason I ever found the amazing thing called Steam and quite a few of my best friends. The slow updates have put a serious dent on my time played in the mod, but I still continue playing nonetheless- this makes me even more happier. :D
Very special thanks to the mappers/ZPS Devs that made zps_rualpanic. If anyone remembers playing ZP, it's a remake of the Haunted House (zp_rhs22), and quite a good one. :D

+2 votes     reply to comment
mark008 Feb 7 2011 says:

i really hope they optimized the mod, i mean those lags when you get shot in the head (as zombie) or you try to shoot on the head with magnum, and no i dont whine cause i cant shoot (im actually 'sharpshooter') but its just that there happens lags that for example whitey might suddenly teleport himself few inches to the side from where he was and be much more near you. sorry if misunderstanding me, im odd at english today, lol.

+1 vote     reply to comment
wazanator Feb 7 2011 replied:

Thats called server lag. It happens. Try and find a server with a better ping rate

+2 votes     reply to comment
CakeMaster7 Feb 8 2011 replied:

Or maybe it might be his Internet connection. Either way, it's not the fault of the Mod's Developers and blaming them is immature.

+1 vote     reply to comment
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