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This is not the current version.
Go to the NetHack Home Page.
To download a tarball of the NetHack code as of the 3.6.1 release:
nethack-361-src.tgz (about 4.5M)  (MD5 sum: 5c469058a0d2876c274c102d56f47bb5)
NetHack 3.6.1 source release.
|Download this file|
gzcat nethack-361-src.tgz > nethack-361-src.tar tar xf nethack-361-src.tarSome versions of Linux do not have a gzcat command. Use the following commands instead:
gzip -dc nethack-361-src.tgz > nethack-361-src.tar tar xf nethack-361-src.tar
The gzip package (containing gzip, gunzip, and gzcat) may be obtained from the Free Software Foundation. A version of tar is also available from the same site.