| 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 |
|---|---|---|---|
| .VMT | VMware | Settings Files | VMware Configuration File |
| .VMF | Valve | Game Files | Valve Map File |
| .BMZ | Valve | Game Files | Portal Bonus Map Zip File |
| .ACF | Valve | Game Files | Steam Application Cache File |
| .MANIFEST | Microsoft Corporation | System Files | Windows Application Manifest File |
| .LAYOUT | Apple | Settings Files | Apple MainStage Layout Data |
| .SMD | Valve | 3D Image Files | Valve Studiomdl Data File |
| .EFX | j2 Global, Inc. | Data Files | eFax Document |
| .OL | Valve | 3D Image Files | Valve Hammer Object Layout File |
| .PVI | Canon Inc. | Data Files | Canon Picture Browser Cache Index |
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