BSP Content Extraction (GoldSrc)
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Sometimes mappers embed content used on a map into a BSP file.
Example: 
Cry of Fear maps. In most of them, the content is embedded (in a BSP file).
Utilities
- Wintextract
- GCFScape (Can extract content)
Warning:it does not extract the wad file, but the bmp images!
- BspTwoMap (Can extract content)
- Half-Life Unified SDK Map Decompiler (Can extract content)
