It's an old version of NS, dated by 30th July of 2003. Uploaded for historical and collectors' purposes, because it's hard to find on internet now. Requires Half-Life v220.127.116.11 (at least) to run.
Win32 and Linux Dedicated Servers Linux server known issue: NS 2.0 runs perfectly on the HLDS 18.104.22.168 stream, which we recommend using. However, the NS 2.0 Linux server does not currently work with the 22.214.171.124 version of the Half-life Dedicated Server for Linux. We"re working with VALVe Software to resolve this issue, and we will post an update to the linux dedicated server as soon as we have solved this compatability issue with HLDS 126.96.36.199 (check forums for up to date info on this at Natural-selection.org). Notes for unzipping to Linux: This is a unified zip file for Linux and Win32. To unzip it, on windows, use winzip or another package and unzip to your halflife server directory. Special note for Linux admins: Please unzip the file *WITHOUT* the -a flag. i.e. simply unzip buy typing "unzip " (without the quotation marks) in your halflife server directory. As always with any new HL mod, reinstalling HLDS and your mod cleanly is HIGHLY recommended to avoid issues running your server. Content Usage: NOTE: This zip file contains only files for running a dedicated server. It will not function properly as a client. It is not for users who want to play NS, it is only for NS server admins. *Note: An updated "so" is available as a seperate download for those having problems running HLDS 188.8.131.52 with Linux.