📚 Formats

Warning

Format specifications are based on reverse-engineering and may contain inaccuracies.

Binary templates for 010 Editor are available in the templates directory.

🧊 Model Formats

.mcsa Scene Assets (Legacy)

Template:

MCSA.bt

Purpose:

Model scene.

Contents:

Geometry, Skeleton, Animation clips, Blend shapes.

Support:

Versions 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 15.0.

.mcsb Scene Bundle

Template:

MCSA.bt

Purpose:

Model scene.

Contents:

Same as .mcsa. Has hash before signature.

.mcvd Trace Model

Template:

MCSA.bt

Purpose:

Colliders and physics.

Note:

Animation sets use the same suffix.

.efkmodel Effekseer Model

Template:

EFKMODEL.bt

Engine:

Effekseer

Purpose:

Animated particle model.

Contents:

Frame based geometry.

Support:

Version 5.

Export

Suffix	Name	UV2	Tangents	Armature	Bone Clips	Morph Clips
.obj	Wavefront OBJ	➖	➖	➖	➖	➖
.glb	glTF Binary	✅	✅	✅	✅	✅
.fbx	Autodesk FBX	✅	❌	✅	✅	❌

✅ Supported

❌ Not supported by scfile

➖ Not supported by format

🌀 Animation Formats

.mcvd Animation Set

Template:

MCSA.bt

Purpose:

Standalone animation.

Contents:

Skeletal and facial animation clips.

Note:

Usually located in assets/highpoly.

.mcal Animation Library

Template:

MCAL.bt

Purpose:

Shared animation by models with matching skeletons.

Contents:

Skeletal animation clips.

Export

Input:

Animation data and one or more compatible .mcsb model scenes.

Output:

File .glb with the assembled scene.

Note:

Relation pairs can be found in Audit Mappings.

🧱 Texture Formats

.ol Object Layer

Template:

OL.bt

Purpose:

Mipmapped texel data.

Contents:

2D textures or cubemaps. Mipmaps compressed with lz4.

Export:

.dds (DirectDrawSurface).

Suffix Conventions

Suffix	Map	Purpose
_diff	Diffuse	Raw surface color
_spek	Specular	Intensity of highlights
_nrm	Normal	Simulates bumps and dents
_emi	Emission	Creates independent glow

FourCC Formats

Encoded	Game Format	DDS Format	Compression
#?3V	DXT1	DXT1	BC1
#?3T	DXT3	DXT3	BC2
#?3R	DXT5	DXT5	BC3
#?)8?	DXN_X	ATI1	BC4
#?)8?>	DXN_XY	ATI2	BC5
5 %&_	RGBA8	R8G8B8A8	None
% 5&_	BGRA8	B8G8R8A8	None
5 %&TU!	RGBA32F	R32G32B32A32	None

.sign Texture Signatures

Template:

SIGN.bt

Purpose:

Texture integrity verification.

Contents:

Texture paths, headers and mipmap images hashes.

🖼️ Image Formats

.mic Media Image Container

Purpose:

GUI and composed images.

Contents:

PNG image data with an ‰MIC signature.

Export:

.png (Portable Network Graphics).

🗃️ Archive Formats

.texarr Texture Array

Template:

TEXARR.bt

Purpose:

Container for .dds blocks textures.

Export:

.zip (ZIP).

⛰️ Region Formats

.mdat World Region Cache

Templates:

MDAT.bt, MDAT.CHUNK.bt

Purpose:

Region container for 32×32 terrain chunks.

Contents:

Blocks, metadata, lighting and biomes compressed with zstd.

Export:

Minecraft Java 1.12.2+ (Anvil 1343), with approximate block mapping and biomes.

Usage guide →

⚙️ NBT Files

Format:

Named Binary Tag

Compression:

None, gzip, zstd.

Export:

.json (JavaScript Object Notation).

Path	Compression	Purpose	Keys (examples)
stalker/itemnames.dat	gzip	Quest item descriptions	➖
config/prefs	zstd	UI read state cache	seenArticleLinks[], seenExperiences[], hasSeen*
config/<Name>/common	zstd	General settings and UI states	trashedItems[], caseLastOpenCount[], complaintsData{...}, seenFrontlineIntros
config/<Name>/sd0	zstd	Incoming friend requests	requests[]
config/<Name>/sd1	zstd	Recent interactions (last 200 players)	interacts[{allianceId, type, username}]
config/<Name>/sd2	zstd	Notifications history (last 100 popups)	notifications[{isRead, receivedMoment, notification{...}}]
config/<Name>/sd3	zstd	Donate shop view history	observedOffers[]
config/<Name>/sd4	zstd	Profile customization UI state	lastSeenBackgroundsVersion, lastSeenPatternsVersion, lastSeenStickersVersion, lastSeenTagsVersion

🛠️ Config Files

Filename	Format	Purpose
display	➖	Selected display ID
keybindings	JSON	Keyboard control mappings
options.json	JSON	Game settings (graphics, audio, gameplay)
quests.json	JSON	Quest visibility toggles
waypoints.cfg	JSON	Custom map markers

📄 Text Formats

Suffix	Format	Purpose
.lang	Java Properties	Localization strings
.properties	Java Properties	Configurations
.md	Markdown	Formatted text
.srt	SubRip	Subtitles
.smm	JSON	Mob configuration

🔒 Encrypted Formats

Note

Used AES. Decryption requires a key recovered from the protected game client.

.xeon Encrypted Bundle

Purpose:

Bundle with sensitive client data.

Contents:

Copy of the assets folder structure.

.mcws World Slice

Purpose:

Settlement progression screens.

Contents:

World slice chunks.

.ta Texture Array

Purpose:

Protection of high resolution texture array.

Contents:

.texarr data.

.bank Audio Bank

Engine:

FMOD Studio.

Purpose:

Primarily voice acting and OST.

Contents:

Adaptive audio events.

🕹️ Launcher Formats

.map Hash Mappings

Template:

HASHMAP.bt

Purpose:

Launcher file integrity verification.

Contents:

Game asset paths and SHA-1 hashes.

.torrent.bin Torrent Binary

Template:

TORRENT.bt

Purpose:

Game content delivery.

Contents:

Modified .torrent (Torrent File).