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This is not the current version.

Step 1: download.
Click on the link below to download NetHack. Depending on your browser you may need to right-click so that the file is saved to disk and not displayed.

nethack-331.tgz (3M bytes)
NetHack 3.3.1 source release.

Download this file

nh330-331-diffs.gz (about 673K) context diff from version 3.3.0 (if you don't know what this is, you don't need it)
Step 2: unpack.

NetHack is shipped in a single archive created with tar and then shrunk with gzip. To unpack under Unix, the following commands should be executed in an empty directory:
```
	gzcat nethack-331.tgz > nethack-331.tar
	tar xf nethack-331.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.
Step 3: build.
See the file README in the top level directory unpacked in Step 2 for build instructions for the various operating systems.

Hosted courtesy of alt.org.