What's the SIS File?
Reporter: Jay Geater | Refreshed: November 26, 2018
SIS File Summary
File Extension SIS has three unique file types (with the primary being the Steam Game Backup Information File format) and is mostly associated with Steam (Valve) and five other software programs. The SIS File Extension are listed predominantly as Backup Files, while in other circumstances they can be Uncommon Files or Database Files.
File Extension SIS is supported by Windows, Mac, and Linux operating systems. These types of files can be found on both desktop and mobile devices. SIS files have a "Low" Popularity Rating; this means that they are not present on most devices.
Although there is a lot more to know about SIS files, those are the most important details of these types of files. If you are having trouble opening these files, or would like more detailed information, please see our comprehensive information below.
Prevalence
Position
/ 11690
Active
Mode
26
November
2018
Refreshed
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