Sleep

Version 0.30: This article may not be up to date for the latest stable release of Crawl.

Monsters (and you!) can be put to sleep by a number of different means:

• The Sleep spell from certain monsters,
• The Sleep attack flavour of sleepcaps,
• The Ensorcelled Hibernation spell, and
• The Dream Dust ability of dream sheep.

Monsters are usually asleep at the time that they are generated (or "dormant", if incapable of sleep).

Undead, nonliving, plants, and berserk monsters cannot be put to sleep. These monsters can still generate "dormant". Creatures with cold resistance are immune to Ensorcelled Hibernation, but not to other sources of sleep.

For players, you can be immune by being undead (Ghoul, Mummy, bloodless [{Vampire]]), nonliving (Gargoyle, Djinni), by having clarity, or being berserk. Undead/nonliving forms (such as Statue Form or Storm Form) are also immune.

Sleeping creatures are unable to act until they are woken up, or until the sleep duration ends. Stabbing is very effective against sleeping monsters. Sleeping monsters can be woken by nearby noise or by the player failing a stealth check, and will always wake if they are attacked (unless they are killed by the attack). The player character will always wake if he/she takes any amount of damage.

Monster Spell

Puts a targeted creature to sleep. Taking damage will typically wake the target, and loud sounds can potentially do so as well.

The Sleep spell attempts to put its target to sleep. It is affected by willpower.

The following enemies cast Sleep:

• S Aizul
• c Satyr

The following enemies may be able to cast Sleep, depending on their spell set:

• & Pandemonium lord (3.4% chance)

History

• Prior to 0.24, needles of sleeping existed.
• Prior to 0.15, monsters would tend to fall asleep if enough time has passed since they last encountered the player.