Sleep Darts

Sleep darts are a non-lethal type of ammunition, which Corvo Attano and Emily Kaldwin can use with the crossbow and Daud with his wristbow.

The darts are filled with a plant-based chemical that causes unaware targets to fall unconscious instantly when shot. However, in battle the effects of the drug are delayed by a few seconds, unless the protagonist purchases an upgrade that makes the drug's effect instantaneous in combat. In Dishonored 2, all enemies take a while to fall unconscious without the upgrade.

Regardless of how many times a target is hit by sleep darts, they will never be killed. However, caution should be observed when attempting nonlethal action; when unconscious, enemies are highly susceptible to fall damage and may be killed if they are not on a safe, flat surface. Unconscious enemies may also be eaten by rats or attacked by bloodflies if left too near a swarm.

In Dishonored, Corvo can carry ten sleep darts. In The Knife of Dunwall and The Brigmore Witches, Daud can carry ten at first, but can upgrade this to fifteen. In Dishonored 2, the protagonist can only carry five.

Upgrades

Dishonored

Upgrade Name	Cost	Requirement	Effect
Combat Sleep Dart	600 Coins	N/A	Sleep Darts instantly render targets unconcious even in combat.

The Knife of Dunwall and The Brigmore Witches

Upgrade Name	Cost	Requirement	Effect
Combat Sleep Dart	600 Coins	N/A	Sleep darts instantly render targets unconscious even in combat.
Sleep Dart Capacity 1	300 Coins	N/A	Increases Daud's sleep dart storage capacity by 3 (total 13).
Sleep Dart Capacity 2	600 Coins	Sleep Dart Capacity 1	Increases Daud's sleep dart storage capacity by 2 (total 15).

Dishonored 2

Upgrade Name	Cost	Requirement	Effect
Instant Sleep Dart	400 Coins	Combat Sleep Dart Blueprint	Puts an enemy to sleep instantly.

Related Bone Charms

Dishonored, The Knife of Dunwall and The Brigmore Witches

• Scavenger - 50% chance to receive extra ammo from pickups.

Dishonored 2

• Lucky Needle - Slight chance to recover Sleep Darts.

Trivia

• Sometimes enemies will spill blood when they are shot with the darts, but they will still be considered "unconscious". 
• Daud, Billie Lurk, the Royal Interrogator and tallboys are immune to sleep darts; however, Daud and Billie Lurk can be knocked out with the darts after they are defeated in their respective battles.
• Sleep darts can be found as individual darts or in bundles. Despite the fact that there appears to be three darts wrapped together, the "bundles" only add two darts to the inventory.

Gallery

Sleep dart icon.

Close-up of a flying sleep dart.

An officer under the effect of a sleep dart.

A note pinned to a wall with sleep darts.