Sleep resistance

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Sleep resistance is a property that appears in NetHack. It prevents you from being put to sleep by wands of sleep, potions of sleeping, sleeping gas traps, orange dragons' breath attacks, wearing an amulet of restful sleep, or reading a dull spellbook.


The property can be obtained intrinsically through the following methods:

  • Playing a Monk
  • Playing an elf of any role and reaching level 4
  • Being polymorphed into a naturally sleep-resistant monster
  • Being crowned
  • Eating a corpse or tin of any of the following monsters:
Monster Conduct Difficulty Chance Notes
homunculus meaty 3 7% poisonous
gelatinous cube vegan 6 10% acidic
flesh golem meaty 10 12%
Chromatic Dragon meaty 23 17% poisonous, Caveman quest nemesis
Woodland-elf meaty 6 27% cannibalism for elves
Green-elf meaty 7 33% cannibalism for elves
Grey-elf meaty 8 40% cannibalism for elves
elf-lord meaty 11 53% cannibalism for elves
Elvenking meaty 11 60% cannibalism for elves
elf meaty 4 67% cannibalism for elves, danger of food poisoning if eating undead elf corpses
orange dragon meaty 20 100%


Obtaining sleep resistance is generally not difficult, as elves are quite common in the Dungeons of Doom and can be safely eaten by anyone except player elves (who already gain the intrinsic by level-up).


The following messages are associated with sleep resistance:

You feel wide awake.
You gained sleep resistance by eating a corpse or tin.
You feel awake!
You gained sleep resistance by reaching level 4 as an elf.
You feel tired!
You lost sleep resistance through level drain.
You yawn.
You don't feel sleepy.
You were hit by a sleep-inducing attack or item, but you have sleep resistance.
You are enveloped in a cloud of gas!
You stepped on a sleeping gas trap, but did not fall asleep because you have sleep resistance.

This page may need to be updated for the current version of NetHack.

It may contain text specific to NetHack 3.6.1. Information on this page may be out of date.

Editors: After reviewing this page and making necessary edits, please change the {{nethack-361}} tag to the current version's tag or {{noversion}} as appropriate.