| File Extension: | LAST |
| File Type Description: | Valve Steam Data |
| File Type Developer: | Valve |
| Primary Associated Software: | Steam |
| Primary Software Developer: | Valve |
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Valve Steam Data files were originally developed by Valve for the Steam software application. Our internal web tracking data indicates that Windows 10 operating system users, and those living in United States, are the most likely to use Valve Steam Data files. Generally, we have found that most of these people are Google Chrome users.
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Linux |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PVI | Canon Inc. | Data Files | Canon Picture Browser Cache Index |
| .DMX | Valve | Video Files | Source Filmmaker Project File |
| .VHV | Valve | Game Files | Valve Source Lighting File |
| .AMX | Valve | Plugin Files | AMX Mod Plugin File |
| .NPC | Nikon | Settings Files | Picture Control Utility Picture Control File |
| .PWF | Valve | Game Files | Counter-Strike PODBot Waypoint File |
| .RAD | Reality Pump Studios | Audio Files | Reality Adlib Tracker Module |
| .BLOB | Valve | Settings Files | Valve Steam Archive |
| .SIS | Valve | Backup Files | Steam Game Backup Information File |
| .BMZ | Valve | Game Files | Portal Bonus Map Zip File |
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