This console variable is queried by the server browser to determine what part of the world the server is in.
This cvar might be deprecated, it has been removed from the HLDS (but still exists in SRCDS) and the Steam server browser doesn't have an option to select a region any more. (Though the in-game server browser still might have this option.)
|0||US - East|
|1||US - West|
- If sv_region is set to a specific region (0 to 7) then the server will be listed if this region or "<All>" is selected in the Steam server browser's location filter.
- If sv_region is set to anything else then the server will only be listed if "<All>" is selected in the Steam server browser's location filter.