Zombie Panic! Source

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Zombie Panic! Source
Zombie Panic! Source cover
Zombie Panic! Team
Release dates
Windows December 28, 2007
Zombie Panic! Source guide on StrategyWiki
Zombie Panic! Source on Wikipedia
Zombie Panic!
Subseries of Contagion
Zombie Panic! (mod) 2003
Zombie Panic! Source 2007

General information

Official Website
Official Manual
Official Forums
Steam Community Discussions
Bugs Report Sub-Forum


Source DRM Notes Keys OS
Icon overlay.png

DLC and expansion packs

Name Notes
Official Soundtrack

Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <Steam-folder>Steam\steamapps\common\Zombie Panic Source\zps\cfg\config_default.cfg
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/17500/pfx/[Note 1]

Save game cloud syncing[edit]

System Native Notes
Steam Cloud
Approx. 977 KB available.

Video settings[edit]

In-game Advanced video options.
In-game Advanced video options.

Graphics feature State Notes
Widescreen resolution
4K Ultra HD
Field of view (FOV)
Borderless fullscreen windowed
Use the -window -noborder command line arguments.
Anisotropic filtering (AF)
Anti-aliasing (AA)
Vertical sync (Vsync)
Can cause issues See Sluggish Mouse with VSync.
60 FPS and 120+ FPS
No frame rate cap as standard on Source Engine games.
High dynamic range display (HDR)
Rendered image uses SDR color space. In-game HDR option refers only to HDR Rendering.

Input settings[edit]

In-game key binding options.
In-game key binding options.

Keyboard and mouse State Notes
Full control rebindings
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support
See the glossary page for potential workarounds.

Audio settings[edit]

In-game key audio options.
In-game key audio options.

Audio feature State Notes
Separate volume controls
Music slider separate from game volume
Surround sound
7.1, 5.1 Surround Sound, 4 Speaker Surrond
Closed captions
Mute on focus lost
"Silence the audio while the game window is in the background" check box.


Language UI Audio Sub Notes
Simplified Chinese
Brazilian Portuguese


Multiplayer types

Type Native Players Notes
Local play
Use Nucleus Coop & Unofficial mod.
LAN play
24 Make sure the server is set to sv_lan 1.
Online play

Connection types

Type Native Notes
Windows dedicated server available under Tools in the Steam client.
Direct IP
Use connect [IP address here] in the console.

Issues fixed[edit]

Purple and black broken textures[edit]

A generic fix for this issue can be found on our Source engine page.

Models appearing invisible[edit]

How to fix missing character models[citation needed]
  1. Press ~ to open the console.
  2. Type the code cl_minmodels 1 into the console.
This code disables server specific custom models.

Sluggish Mouse with VSync[edit]

How to fix sluggish mouse[citation needed]
  1. Press ~ to open the console.
  2. Type the code fps_max 59.9 into the console.
This code will limit the game to 59.9 frames per second even with VSync disabled.

Other information[edit]

Launch parameters[edit]

You can launch Zombie Panic! Source with launch parameters - these parameters dictating how certain aspects of the game behaves (outside of gameplay).
Launch parameters are typically prefixed with - (dash), however you can also set console commands by providing the console command with a + (plus) prefix.
How to add launch paramaters[citation needed]
  1. Find Zombie Panic! Source in your Steam Library.
  2. Right-click the game name.
  3. Select Properties.
  4. Select Set launch options....
  5. Add your launch parameters and press OK.
  6. Next time you launch the game the properties will come into effect.

Useful launch parameters[edit]

If you experience stuttering disable Windows Aero from the video options menu.
Parameter Description
-autoconfig Restores video and performance settings to default for the current hardware detected. Ignores settings inside any .cfg files until this parameter is removed.
-console Starts the game with the developer console enabled.
-dxlevel xx Forces the game to launch in a specific DirectX version, where xx is:
  • "80" = DirectX 8 (however this is potentially buggy, use 81 for better performance)
  • "81" = DirectX 8.1
  • "90" = DirectX9 with Shader Model 2
  • "95" = DirectX9 with Shader Model 3
  • "98" = DirectX9 on DirectX10 hardware Shader Model 4
Remove this argument after starting Zombie Panic! Source once or it will keep reseting your other settings.
-h height or -height height Forces the engine to start with resolution set to height.
-w width or -width width Forces the engine to start with resolution set to width.

Console Commands[edit]

Games running on the source engine can utilize Source Engine Console Commands for various tasks.
These commands can be saved into <path-to-game>\autoexec.cfg to be executed when the game launches.
Enabling the console in Source games[citation needed]
  1. Launch the game.
  2. From the main menu select Options.
  3. Select the Keyboard tab.
  4. Click the Advanced button.
  5. Check the box next to Enable developer console (~).
  6. Click Apply.


Press ~ to open the console.
Some commands may first require you enabling sv_cheats. You can do so with sv_cheats 1.
Many servers will not allow you to play with cheats enabled, or will disable them upon entering the server.
Users without a US keyboard could experience some problems.

Useful console commands[edit]

Command Notes
net_graph 1 Can be used from 1 to 4 with higher numbers providing more information. This code enables you to view in-game FPS, ping and more. There may be a performance loss from using this.
ping Shows the ping of all clients connected to the server in the console.
cl_showfps 1 Shows the frames per second, 1 = exact frames per second, 2 = average over the last second.
snd_async_fullyasync 1 May help you are experiencing freezes when some sounds that aren't cached are playing. Allows sounds to play when ready if loading it is too slow, instead of freezing the entire game until it is.
fps_max 144 This code sets the maximum frame rate for the game and it can be changed to any value up to one decimal place, in this example the maximum frame rate would be 144.0 fps.

Other information[edit]


Technical specs Supported Notes
Direct3D 9
Shader Model support 3.0
Executable 32-bit 64-bit Notes

System requirements[edit]

Minimum Recommended
Operating system (OS) Vista
Processor (CPU) 1.7 GHz
System memory (RAM) 2 GB
Hard disk drive (HDD) 8 GB
Video card (GPU) DirectX 9.0c compatible
Shader model 3.0 support
Sound (audio device) DirectX compatible sound card


  1. File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/17500/ in addition to or instead of this directory. The app ID (17500) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.