S.T.A.L.K.E.R.: Shadow of Chernobyl

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S.T.A.L.K.E.R.: Shadow of Chernobyl
STALKER Shadow of Chernobyl Cover.jpg
Release dates
March 20, 2007
S.T.A.L.K.E.R.: Shadow of Chernobyl at WineHQ
S.T.A.L.K.E.R.: Shadow of Chernobyl at SteamDB
 S.T.A.L.K.E.R.: Shadow of Chernobyl at Wikipedia
S.T.A.L.K.E.R.: Shadow of Chernobyl 2007
S.T.A.L.K.E.R.: Clear Sky 2008
S.T.A.L.K.E.R.: Call of Pripyat 2010
S.T.A.L.K.E.R.: Lost Alpha (Unofficial) 2014

Key points

Information Installing ZRP is greatly recommended as it eliminates most bugs without modifying the game's experience.
Advantage Large modding community.[1][2]
Advantage Retail CD-keys and some of the Steam ones are now redeemable on GOG.com using the reclaim page.
Information Use the Multi-Patch to replace the GameSpy master server.

General information

More information Official website
More information The S.T.A.L.K.E.R. Wiki
More information GOG.com Community Discussions for game series
More information GOG.com Support Page
More information Steam Community Discussions
More information Steam Users' Forums
More information Official forums
More information TweakGuides guide


Source DRM Notes Keys
Retail DRM details are not known Availability Table Icons - GOGcom.svg
Amazon.com DRM details are not known
GamersGate Availability Table Icons - Steam.svg
GOG.com DRM-free
Steam Availability Table Icons - Steam.svg Some CD-keys listed in-game under Multiplayer can be redeemed on GOG.com.[3]

Essential improvements[edit]



The Multi-Patch replaces the GameSpy master servers and optionally forces Vsync. The Steam version is already patched.


Information This is the latest official patch for the game. It is best suited overall for Single Player as most multiplayer servers use v1.0006


Information Some mods only work with v1.0004. Only use this patch if those mods have no updated version that work with newer versions of the game
Information For a guide on how to downgrade a copy of the game from v1.0005 to v1.0004, see Downgrading to v1.0004

Unofficial v1.0008 Patch[edit]


Downgrading to v1.0004[edit]

Fix Downgrading to 1.0004

  1. Open the Registry Editor:
    • Vista and later: open the Start screen/Start menu, type regedit and press Enter.
    • Windows XP: press Win+R, type regedit and press Enter.
  3. If you can't find it there, search for "installvers".
  4. If there is no "InstallLang" value located here, you need to add a string and enter the language code you use (for the US version, this is "en").
  5. Install the 1.0004 patch from above links (choose the version corresponding to the main language used in-game) which will install the files into a THQ folder in your Program Files by default.
  6. Copy all these files into your STALKER installation's gamedata folder.
  7. If you encounter an error saying the patch can only be used for "[en]", then replace the aforementioned language value with whatever is it in the brackets in the error message.
  8. Delete gamedata.dbc and gamedata.dbd as these are 1.0006 only files.

Skip intro videos[edit]

Fix Start game with -nointro parameter

Xetrill's Modified LuaJIT library[edit]

Advantage Users has reported increased performance, especially in script-heavy mods.

Fix Use replacement files

  1. Download the modified library.
  2. Extract the content of LuaJIT_EXPERIMENTAL_latest.zip/bin in <path-to-game>\bin.


Information It is recommended to backup the conflicting files before replacement.


Information The STALKER series has garnered a dedicated following which includes a very active modding community, most of which is based in Russia. Translations are available for most of the popular mods. The best way to determine which type of mod you will enjoy is by first trying the vanilla game out (with ZRP for bugfixes). Below are some basic recommendations.

Fix Preparing the game for mods

To use mods with STALKER, you will first need to edit your fsgame.ltx - file found under the game's install folder.

  1. Go to the installation folder.
  2. Open fsgame.ltx with a text editor.
  3. Find line:
    $game_data$ = false| true| $fs_root$| gamedata
  4. Change it to:
    $game_data$ = true| true| $fs_root$| gamedata


Information If the mod comes with an executable, you may need to point it manually to the correct installation folder. If it comes as a file package, extract and copy the mod's contents into your gamedata folder.
Information To patch your mod or to add new ones on top, overwrite and merge your installation's gamedata folder with the new one.

Fix Using Smart Mod Manager

Download the program at Codeplex. The program installs the mods from .zip or directly from the folder. It will warn you if there are issues with other mods combined; then you have to choose one of them.

  1. First select the game (Stalker: Shadow of Chernobyl or Stalker Clear Sky)
  2. Set up the right language, version and folder of the game
  3. Go to the gametab and install mods from .zip or folder.
Information Enable/Disable mods also possible in the manager

Zone Reclamation Project[edit]

Advantage Fixes many bugs present in final version of game
Advantage Keeps game as vanilla as possible
Advantage Improved UI and controls


Advantage Revamps many game mechanics, including enemy AI and ballistics
Disadvantage Considered to be unforgiving in difficulty

Shaders MAX[edit]

Advantage Many improvments in visual quality
Advantage Can be combined with other mods to increase visual fidelity
Information May be incompatible with some other mods that alter shaders

S.T.A.L.K.E.R Complete[edit]

Advantage Overhauls many game mechanics
Advantage Fixes many bugs present in the final game
Advantage Many improvements in visual quality
Advantage Comes with easy to use installer
Disadvantage Changes many core game mechanics

Lost Alpha[edit]

Advantage Restores game mechanics and levels cut from final game
Advantage Visual tweaks

Game data[edit]

Configuration file(s) location[edit]

Windows %PUBLIC%\Documents\STALKER-SHOC
Information CD key, language and GameSpy ID are stored in HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GSC Game World\STALKER-SHOC

Save game data location[edit]

Windows %PUBLIC%\Documents\STALKER-SHOC\savedgames
Information You can modify the save game data location by editing fsgame.ltx in gamedata.

Save game cloud syncing[edit]

System Native Notes
Steam Cloud No native support
GameSave Manager Native support

Video settings[edit]

Basic video settings
Advanced video settings (Vsync and 60 Hz frequency not visible)
Graphics option Option WSGF Notes
Widescreen resolution Native support WSGF WS Silver.svg Some HUD elements may be stretched.
Multi-monitor Native support WSGF MM Silver.svg Some HUD elements may be stretched.
4K Ultra HD Native support WSGF Incomplete.svg
Field of view (FOV) Hackable See Field of view (FOV)
Windowed Native support
Borderless fullscreen windowed Hackable Use Borderless Gaming or similar software.
Anisotropic filtering (AF) Native support
Anti-aliasing (AA) No native support A slider is included but doesn't actually work.
Vertical sync (Vsync) Hackable In-game Vsync option is broken.[4] Use the Multi-Patch to fix it.
60 FPS Native support
120+ FPS Native support No frame rate or refresh rate cap.[5]

Field of view (FOV)[edit]

Fix Install FOV Switcher

  1. Download FOV Switcher and extract it.
  2. Copy the appropriate exe file to the BIN folder inside of the installation folder and launch it.


Information It's highly recommended not to play online with the FOV hack installed.
Information To restore the settings to default, use the patcher again.

Input settings[edit]

Controls menu
Keyboard and mouse Native Notes
Remapping Native support
Mouse acceleration No native support
Mouse input in menus Native support
Mouse Y-axis inversion Native support
Controller support No native support

Audio settings[edit]

Audio menu
Audio options Native Notes
Separate volume controls Native support SFX and music only.
Surround sound Native support Up to 7.0 output[6]
Subtitles No native support
Closed captions No native support
Mute on focus lost Native support
EAX support Native support EAX 2.0


Language UI Audio CC Notes
English Native support Native support Native support Some unimportant non-conversation speech is Russian (e.g. jokes).
French Native support Native support Native support
German Native support Native support Native support Some unimportant non-conversation speech is Russian (e.g. jokes).
Italian Native support Unknown Native support
Polish Native support Native support Native support Only available in Polish retail release. Not available digitally.
Russian Native support Native support Native support Steam version only has Russian in Russian version.
Spanish Native support Unknown Native support
Turkish Native support No native support Native support A Turkish fan patch is available here. (Mirror)
Ukrainian Native support Native support Native support An official Ukrainian patch is available here, can be installed over the Russian version of the game only.


Information Multiplayer servers can optionally use BattlEye anti-cheat protection.

Multiplayer types

Type Native Players Notes
LAN play Native support 32
Online play Native support 32 Use the Multi-Patch to replace the GameSpy master server.

Connection types

Type Native Notes
Matchmaking No native support
Peer-to-peer Native support
Dedicated Native support
Self-hosting Native support
Direct IP Native support


Protocol Port(s) and/or port range(s)
TCP (outbound) 3783, 6515, 6667, 13139, 27900, 28900, 29900, 29901

Issues fixed[edit]

"Unable to connect to master server" error[edit]

Information The GameSpy master server has been shut down; use the Multi-Patch.

Other information[edit]


Technical specs Supported Notes
Direct3D 8, 9 Running the game in DirectX 9 mode is only possible with dynamic lighting enabled.
64-bit executable No native support


Middleware Notes
Physics Open Dynamics Engine
Audio OpenAL

Optimal settings[edit]

Information Lowering Vision- and Lightning distance, Object quality to 50% improves the performance without suffering major graphical visuals.
Information Reducing Grass Density a point or two may help stuttering issues.

Remove head bob[edit]

Fix Edit User.LTX

  1. Open User.LTX with a text editor.
  2. Change cam_inert to 0.
  3. Save changes.


Information It can also be changed while in game using the console cam_inert X where X stand as a value, which you might want to translate into 0.1

Enable FPS counter[edit]

Fix Use command console

  1. Open the in-game console by pressing ~.
  2. Enter: rs_stats 1

Shorter load times[edit]

Fix Start game with the -noprefetch parameter

Glitchy shadows using widescreen resolutions[edit]

Fix Edit User.LTX

  1. Open User.LTX with a text editor.
  2. Change r2_sun_near to 20..
  3. Change r2_sun_near_border to 1..

Large Address Aware[edit]

Improves stability on systems with at least 3GB RAM by allowing the application to use more than 2GB RAM.

System requirements[edit]

Minimum Recommended
Operating system (OS)
2000 SP4, XP SP2
Processor (CPU) AMD Athlon XP 2200+
Intel Pentium IV 2.0 GHz
AMD Athlon 64 X2 4200+
Intel Core 2 Duo E6400
System memory (RAM) 512 MB 1.5 GB
Hard disk drive (HDD)
10 GB
Video card (GPU) ATI Radeon 9600
Nvidia GeForce 5700
128 MB of VRAM
DirectX 8 compatible
ATI Radeon X1850
Nvidia GeForce 7900
256 MB of VRAM
DirectX 9.0c compatible


  1. Stalker Mods, Stalker Maps, Stalker Downloads
  2. Mods - S.T.A.L.K.E.R. Shadow of Chernobyl Game - Mod DB
  3. Reclaim your games. DRM-Free!, page 4 - Forum - GOG.com
  4. TweakGuides.com - STALKER: Shadow of Chernobyl Tweak Guide - In-Game Settings (Pt.2)
  5. New 120Hz Games Report
  6. PC Gaming Surround Sound Round-up