Concerning GCFScape

GCFScape is a little tool that can open and remove from GCF files that are used by Heavy steam for game material storage. It can be downloaded and install.

GCFScape 1.7.1 or far better is needed to open up VPK documents. To search the base content of a video game utilizing VPK, you have to open up the index documents pak_01_dir. vpk.


Pointer: When you mount GCFScape see to it you associate GCF files with GCFScape so they'’ ll open straight away. The data will certainly be given symbols if this has actually been done.

When a GCF is opened, the program will certainly look like this:

Clicking the little switch, you can surf the folders clicking them so they increase and also reveal subfolders thus, then clicking on a folder will show the components to the right:

Right clicking a documents will bring up a context menu where you can draw out from:

Clicking this will bring up a window where you can select your save location:

Clicking OK will extract the data to your picked place.

Supported Formats

Along with GCF files, GCFScape also supports Half-Life BSP, NCF, PAK, VPK, HEAP, and also XZP link gfc scape website


The complying with alternatives are readily available inside the choices menu in GCFScape:


Enable verbose logging (enabled by default). Disable this option to decrease log outcome. This can be useful when you are drawing out huge quantities of files and also just intend to be informed of mistakes.

Submit Mapping

Enable Windows documents mapping (allowed by default). Submit mapping is an effective approach of random documents accessibility. Some running systems have problems with file mapping (in particular Windows 98) and may generate mistakes; disable this option in such situations.

Quick Submit Mapping

Map the whole data to memory (instead of pieces of it as needed). Successfully caches the data in memory. Can speed up points up if you have enough complimentary memory. Some operating systems have issues with data mapping (specifically Windows 98) and also may produce mistakes; disable this alternative in such situations.

Unstable Access

Enable unpredictable data accessibility (allowed by default). By default, Steam loads.gcf documents in read/write setting and is reliant change their materials at any moment (as updates take place). Must this take place, GCFScape would become unstable and most likely crash. Unstable gain access to allows you to open GCF files filled in Steam at your very own threat. It is typically secure and also can verify valuable for checking out which files Heavy steam is upgrading.

Compose Access

Enable create data gain access to (impaired by default). Compose access provides GCFScape the ability to modify specific documents and also is not suitable with unpredictable accessibility for the instability a combination of both would create. This alternative is needed for GCF defragmentation.


In version 1.5.0, GCFScape included the capability to validate GCF data. This process calculates a collection of hybrid CRC 32 and also Adler-32 checksums for every data within a GCF file and compares each checksum to the checksums precalculated and also saved within the GCF documents. This attribute gives a fast alternative to Steam for inspecting GCF corruption and listing corrupt as well as insufficient data, but can not fix corrupted GCF files as Vapor can.

To confirm all or part of a GCF documents making use of GCFScape, complete the adhering to steps:

  1. Release GCFScape.
  2. From the Data food selection, open your GCF file.
  3. Search to the top level folder you desire to confirm (root for the whole GCF documents).
  4. Right click on the folder and also choose Validate.
  5. Repeat actions 2-4 for every GCF documents you wish to verify.


In version 1.6.0, the capability to defragment GCF documents was included in GCFScape. This attribute was included after numerous examinations by Nem suggested that Heavy steam'’ s integrated in defragmenter did not constantly totally defragment a video game'’ s GCF files. As a matter of fact, Vapor would certainly usually incorrectly report a fragmentation of 0% when real fragmentation was as high or more than 10%, a value incredibly detrimental to efficiency.

GCFScape specifies the fragmentation proportion to be the variety of utilized collections that are out of order split by the overall number of used clusters. The very first cluster in a data can never ever be out of order, so a documents that consists of just one cluster (typically < <8192 B) can never ever be fragmented. At 10% fragmentation, a typical ~ 785 MEGABYTES GCF documents (approximately 100,000 collections at 8192 B per cluster) would need, usually, one seek procedure for each 80 KB of data read. You can see the fragmentation of any documents or folder (origin for the entire GCF data) by inspecting its homes.

To defragment your GCF documents using GCFScape, complete the following steps:

  1. Closure Steam.
  2. Release GCFScape.
  3. In the Options food selection, allow Write Access and also disable Volatile Gain access to.
  4. From the Documents food selection, open your GCF documents.
  5. From the Tools food selection, choose Defragment.
  6. Repeat steps 4-5 for each and every GCF documents you desire to defragment.

Note: The defragmentation procedure is quite sluggish, however can be canceled as well as resumed any time.

Running GCFScape

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

These demands put on all running systems, MacOS as well as Linux individuals will certainly need to mount these in order to run GCFScape with A glass of wine.