This is a category for variants that are historically important but no longer under development, having either been abandoned by their developers, merged into the mainline code, or superseded by some other variant.
“NetHack Plus is a variant of NetHack 3.1.3. Stephen White published several versions from June...NetHack Plus
“The Wizard Patch was a patch against NetHack 3.2.0 through NetHack 3.2.3. The stated intent was...Wizard Patch
“NetHack-- is a variant of several historic versions of NetHack, and a distant ancestor of...NetHack--
“SLASH (SuperLotsaAddedStuffHack) is a variant of NetHack 3.1.3, later updated to NetHack 3.2.2...SLASH
“SLASH 6 was the last of six releases of SLASH that were based on NetHack 3.1.3. The source code...SLASH 6