The biodiversity patch is a very large patch that adds several new monsters and contains other changes by Nicholas Webb. The current version is 1.2a for NetHack 3.4.3. For more information, visit the biodiversity patch's home page.
|sphinx||f||Egyptian/Greek mythology||Challenges the player with riddles|
|waterspout gargoyle||g||Has a spit attack that can wet items|
|brownie||l||Celtic folklore||Can improve shoes, or tamper with the ones the player is wearing|
|pooka||l||Celtic folklore||Charms monsters (including your pets)|
|satyr||n||Greek mythology||Steals items and charms monsters (including your pets)|
|labyrinth trapper||t||Hides in mazes|
|gold bug||x||Edgar Allan Poe (loosely)||Steals (and eats) gold pieces and other golden items|
|will o' wisp||y||Widespread folklore||Appears in swamps; its explosion attack causes confusion|
|bannik||z||Slavic folklore||Attacks with scalding water|
|leshy||z||Slavic folklore||Confusing gaze|
|bandersnatch||J||Lewis Carroll||Digesting attack|
|jubjub bird||J||Lewis Carroll||Intelligence draining gaze|
|clockwork automaton||Q||Six melee attacks|
|quark||Q||Particle physics||Uses one of six random "flavor" attacks|
|disintegrator||R||This thread||Passive disintegration attack|
|hunger hulk||U||Pun on umber hulk||Makes its victims hungry|
|umbral hulk||U||Pun on umber hulk||Blinds victims with its gaze|
|nosferatu||V||Uncertain origin||Paralyzes its victims with fear|
|blemmye||X||Medieval folklore||Legendary humanoid with its face on its torso, and no head|
|otyugh||X||Dungeons & Dragons||Enjoys rotten food|
|alligator snapping turtle|
Changes to existing monsters
- The steam vortex's engulfing attack is now coded as scalding rather than fire damage.
- Gnomes (and bats) use echolocation instead of infravision.
- Quantum mechanics (and clockwork automata) may be named after historical figures.
- Rope golems drop leashes when destroyed.
- Straw golems drop sheaves of hay when destroyed. They may also drop a damaged fedora. (Clothing for a scarecrow?)
- Iron golems drop cogwheels and large shields when destroyed, in addition to iron chains. Clockwork automata drop cogwheels and sprockets. These belong to the _ item class (renamed 'useless item') and can be used as improvised weapons.
- Guides, the Tourist quest guardians, now offer services to players.
- The color and name of the Knight quest nemesis have been changed. Ixoth is now the white-colored Hwitwyrm, an allusion to Welsh folklore. The dragon's attacks and attributes remain the same.
- The Chromatic Dragon is renamed Tiamat.
- All regular dragons except the gray dragon have new names. (These are not randomized, as in UnNetHack.)
- The large kobold and kobold lord are renamed kobold hewer and kobold chieftain. The hewer can tunnel if it has a pick.
- The water nymph and wood nymph are renamed naiad and dryad.
- Tigers are now colored orange (f) instead of yellow (f), to distinguish them from the sphinx.
- Many quest home levels are now considered to be "outdoors", with "sky" overhead instead of a "ceiling". On these levels dart traps will be created instead of falling rock traps.
- The Priest quest branch may have a different home level design, depending on which pantheon the player was assigned at the beginning of the game.
- Trees which produce specific types of fruit comestibles have been added. There are also oak trees which produce acorns, and elven dogwoods (used to make elven wooden weapons).
- A golden wand has been added to the list of randomized appearances for wands, as an item that the gold bug can eat.
- Using a wand of light to #engrave produces glowing writing.
- Amber may contain fossilized xans or spiders, which can be revived with stone to flesh.
- Samurai know the corpses of sea monsters by their corresponding Japanese culinary names.
- Orcs can saddle and ride wargs, instead of horses.
UnNetHack and some other variants incorporate part of this patch, most notably the disintegrator, a much more dangerous cousin of the rust monster and the disenchanter. Some of the new names for generic dragons are also used in UnNetHack, but their breath types and resistances are randomized at the beginning of the game.