Vtf File Stands For
Vtf extension is related to Valve Texture File. You have chance to open vtf files with VTF Explorer software.
These are the texture files which used by the producer of the Valve game. These files which are similar with image files are used for coloring different places and characters in this game. You will need Vtf Explorer software to open vtf files. If you need to learn more about VTF Explorer software, please check the following web page.
What needed for openin Vtf file
VTF Explorer or Texture packer for games
Links stands for Vtf file