# Heck² patch

Heck² patch

Author

Kelly Bailey

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The Heck² patch provides a collection of special levels to replace some of the maze levels in Gehennom. The new levels consist of fixed designs amid random mazes; the placement of levels into the dungeon is random. The patch is against NetHack 3.4.2 but also works with 3.4.3. The patch has a home page.
The patch makes extensive use of the des-file format, often ordering multiple MAP and MAZEWALK commands to produce the new levels.
There are five groups of Heck² levels: heck-a, heck-b, heck-c, heck-d, heck-e. Each game has a 25% chance of a heck-a level, a 50% chance of a heck-b level, a 75% chance of a heck-c level, a 100% chance of a single heck-d level, and four of the heck-e levels.
The heck-a levels include:

Demogorgon escorted by two shriekers
Dispater escorted by green slimes and disenchanters
mind flayers and master mind flayers
Geryon escorted by doppelgangers and werewolves
iron bars and iron golems
liches
Yeenoghu escorted by minotaurs
The heck-b levels include:

a cross-shaped level
a room with many trolls
a stream of lava with red dragons
a maze of lava
a dark, open region
a small pool with kraken
parallel, vertical corridors
hidden closets
The heck-c, heck-d, and heck-e levels are less exceptional, but they insert open areas into the maze and sometimes unusual features like pillars or rounded rooms; they also insert solid wall, sometimes reshaping a level like 'm' or 'w'.
The biodiversity patch incorporates the Heck² patch.
UnNetHack applies a modified version of the patch—some levels have been added to the mix, the numbers have been tweaked, and some of the least popular levels were removed.