Concerning GCFScape

GCFScape is a little tool that can open and also extract from GCF files that are made use of by Vapor for video game material storage space. It can be downloaded.

GCFScape 1.7.1 or much better is required to open VPK files. To browse the base content of a game using VPK, you should open the index file pak_01_dir. vpk.


Idea: When you install GCFScape ensure you associate GCF documents with GCFScape so they'’ ll open quickly. The files will certainly be given symbols if this has actually been done.

When a GCF is opened, the program will resemble this:

Clicking the little switch, you can surf the folders clicking them so they increase and also reveal subfolders like so, after that clicking a folder will reveal the components to the right:

Right clicking a file will certainly bring up a context food selection from where you can draw out from:

Clicking this will raise a home window where you can pick your save area:

Clicking OK will extract the documents to your chosen place.

Sustained Formats

Along with GCF data, GCFScape likewise supports Half-Life BSP, NCF, PAK, VPK, WAD, and XZP about it gcfscape vpk from Our Articles


The adhering to options are readily available inside the choices menu in GCFScape:


Enable verbose logging (made it possible for by default). Disable this choice to reduce log output. This can be beneficial when you are removing huge quantities of documents and only intend to be educated of errors.

File Mapping

Enable Windows data mapping (enabled by default). Submit mapping is a reliable method of random data gain access to. Some running systems have issues with documents mapping (specifically Windows 98) and may generate mistakes; disable this choice in such cases.

Quick Submit Mapping

Map the entire data to memory (instead of pieces of it as needed). Successfully caches the file in memory. Can speed points up if you have enough totally free memory. Some running systems have issues with documents mapping (specifically Windows 98) and might produce errors; disable this option in such instances.

Volatile Accessibility

Enable volatile data access (allowed by default). By default, Steam loads.gcf files in read/write mode as well as is reliant transform their materials at any moment (as updates occur). Need to this happen, GCFScape would certainly end up being unstable and also likely accident. Volatile access allows you to open up GCF documents packed in Vapor at your own threat. It is generally secure as well as can verify beneficial for analyzing which files Vapor is upgrading.

Write Gain access to

Enable write data access (disabled by default). Write accessibility gives GCFScape the ability to modify specific documents and is not compatible with unpredictable access for the instability a mix of both would certainly create. This choice is needed for GCF defragmentation.


In version 1.5.0, GCFScape added the capacity to confirm GCF data. This procedure calculates a collection of hybrid CRC 32 and Adler-32 checksums for every data within a GCF data and compares each checksum to the checksums precalculated and also stored within the GCF documents. This attribute provides a fast option to Steam for checking GCF corruption and listing corrupt as well as incomplete documents, but can not fix corrupted GCF documents as Steam can.

To verify all or part of a GCF file making use of GCFScape, finish the complying with steps:

  1. Introduce GCFScape.
  2. From the File food selection, open your GCF documents.
  3. Search to the leading degree folder you wish to validate (root for the whole GCF data).
  4. Right click the folder as well as pick Validate.
  5. Repeat steps 2-4 for each and every GCF data you desire to verify.


In version 1.6.0, the capability to defragment GCF files was added to GCFScape. This function was included after numerous examinations by Nem suggested that Heavy steam'’ s built in defragmenter did not constantly completely defragment a game'’ s GCF files. As a matter of fact, Vapor would certainly usually wrongly report a fragmentation of 0% when real fragmentation was as high or greater than 10%, a worth incredibly destructive to performance.

GCFScape defines the fragmentation proportion to be the variety of made use of clusters that are out of order divided by the overall number of used collections. The very first cluster in a documents can never be out of order, so a file that contains only one collection (generally < <8192 B) can never be fragmented. At 10% fragmentation, a normal ~ 785 MB GCF file (roughly 100,000 clusters at 8192 B per collection) would need, usually, one seek operation for each 80 KB of information read. You can see the fragmentation of any file or folder (origin for the whole GCF data) by examining its residential or commercial properties.

To defragment your GCF data making use of GCFScape, complete the adhering to actions:

  1. Shutdown Heavy steam.
  2. Launch GCFScape.
  3. In the Options menu, allow Write Accessibility and disable Volatile Gain access to.
  4. From the File menu, open your GCF file.
  5. From the Tools food selection, select Defragment.
  6. Repeat actions 4-5 for every GCF data you desire to defragment.

Keep in mind: The defragmentation procedure is rather slow, however can be canceled and also returned to at any moment.

Running GCFScape

GCFScape requires. WEB 4.0 (or later), and also Visual C++ 2010 Runtime (x86 or x64) to run.

These needs relate to all operating systems, MacOS and Linux customers will certainly need to set up these in order to run GCFScape through Red wine.


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