Steam for Mac file extensions

Steam for Mac works with the following file extensions:

Note: You can click on any file extension link from the list below, to view its detailed information. The list of extensions used or otherwise associated with the application may not be complete, because many common file extensions on our website, such as jpg (pictures) or txt (text files), can be opened by a large number of applications, or are too general file format. However most, if not all directly associated file extensions should be listed with its appropriate program. Although its likely, that some file extensions may be missing from the list of associated file extensions with the application, yet they can be opened, be part of, or otherwise be associated with the program.

Steam for Mac default file extension associations

.acf.blob.crash.csd.csm.dmp.gcf.layout.menu.mst.ncf.res.sid.sim.sis.ssfn.stskin.styles.vdf.ztmp

Other file extensions associated with Steam for Mac

.alt.cachedmsg.fxo.gmad.hts.last.patch.steamstart.vrmanifest

Comparison table of actions that Steam for Mac can perform with each of its associated file type ^beta

This table might not contain all possible associated or supported file types or may contain incorrect data.
If you need more information please contact the developers of Steam for Mac (Valve Corporation), or check out their product website.