Sleep gas

This information is reliable as of patch 2.0.199.5.

sleep gas

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1 lb. Weight
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	SleepGas
	AjiConch

sleep gas

Miasma settles the lungs of its neighbors and guides them to the dreaming dale. Their bodies repose.

Perfect

Sleep gas is a respiratory-based gas effect that has a chance to put creatures to sleep.

Sources

Sources of sleep gas, with their level and density, include:

Source	Gas Level	Gas Density	Reference
Sleep Gas Generation	Mutation Level	800 per turn, divided evenly into non-solid adjacent squares
billowing conch of the Aji	5	800 per turn, divided evenly into non-solid adjacent squares
sleep gas grenade mk I	1	40
sleep gas grenade mk II	1	80
sleep gas grenade mk III	1	120
dreambeard or elder dreambeard	1	80
drowsing urchin	1	80

Effects

In order to be affected by sleep gas, a creature must respire. Robots and holograms do not respire and cannot be affected by sleep gas.

Sleep gas cannot seep through walls or other occluding objects, so it will remain contained by them instead. This often results in sleep gas having very high density if it is released in cramped areas, making it noticeably more potent.

Any creature that is not immune to the effects of sleep gas that enters a sleep gas cloud must make a Toughness save to resist falling asleep. If they fail the save, they will fall asleep for a number of rounds dependent on the strength (Gas Level) of the sleep gas. Items such as the vinewood sap mask or gas mask provide a bonus to the creature's saving roll for this Toughness save and reduce the save target by reducing the effective density of gas for purposes of the calculation.

The following formulas are used to determine the Toughness save and sleep duration:

Toughness Save	5 + GasLevel + ( Density / 10 )
Sleep Duration	4d6 + GasLevel

In practice, gas density is highly variable due to a significant amount of randomization involved in gas behavior. Gas is constantly moving between cells, dissipating over time, merging with other gas, and being affected by random calculations in the game engine.

The density of sleep gas can get much higher than 100 with the Sleep Gas Generation mutation. With that mutation, a creature releases 800 density units of gas into the open cells around them each turn, and can continuously release gas for many turns depending on mutation level. This can result in very high density gas if the mutant releases all gas into the same area without moving, or if there are many nearby walls that contain the sleep gas into a smaller and more concentrated area.

Gas Level	Density	Toughness Save to Resist	Sleep Duration
1	50	11	4d6+15-25 (Avg: 15)
	100	16	4d6+15-25 (Avg: 15)
	200	26	4d6+15-25 (Avg: 15)
	400	46	4d6+15-25 (Avg: 15)
800	86	4d6+15-25 (Avg: 15)
2	50	12	4d6+26-26 (Avg: 16)
	100	17	4d6+26-26 (Avg: 16)
	200	27	4d6+26-26 (Avg: 16)
	400	47	4d6+26-26 (Avg: 16)
800	87	4d6+26-26 (Avg: 16)
3	50	13	4d6+37-27 (Avg: 17)
	100	18	4d6+37-27 (Avg: 17)
	200	28	4d6+37-27 (Avg: 17)
	400	48	4d6+37-27 (Avg: 17)
800	88	4d6+37-27 (Avg: 17)
4	50	14	4d6+48-28 (Avg: 18)
	100	19	4d6+48-28 (Avg: 18)
	200	29	4d6+48-28 (Avg: 18)
	400	49	4d6+48-28 (Avg: 18)
800	89	4d6+48-28 (Avg: 18)
5	50	15	4d6+59-29 (Avg: 19)
	100	20	4d6+59-29 (Avg: 19)
	200	30	4d6+59-29 (Avg: 19)
	400	50	4d6+59-29 (Avg: 19)
800	90	4d6+59-29 (Avg: 19)
6	50	16	4d6+610-30 (Avg: 20)
	100	21	4d6+610-30 (Avg: 20)
	200	31	4d6+610-30 (Avg: 20)
	400	51	4d6+610-30 (Avg: 20)
800	91	4d6+610-30 (Avg: 20)
7	50	17	4d6+711-31 (Avg: 21)
	100	22	4d6+711-31 (Avg: 21)
	200	32	4d6+711-31 (Avg: 21)
	400	52	4d6+711-31 (Avg: 21)
800	92	4d6+711-31 (Avg: 21)
8	50	18	4d6+812-32 (Avg: 22)
	100	23	4d6+812-32 (Avg: 22)
	200	33	4d6+812-32 (Avg: 22)
	400	53	4d6+812-32 (Avg: 22)
800	93	4d6+812-32 (Avg: 22)
9	50	19	4d6+913-33 (Avg: 23)
	100	24	4d6+913-33 (Avg: 23)
	200	34	4d6+913-33 (Avg: 23)
	400	54	4d6+913-33 (Avg: 23)
800	94	4d6+913-33 (Avg: 23)
10	50	20	4d6+1014-34 (Avg: 24)
	100	25	4d6+1014-34 (Avg: 24)
	200	35	4d6+1014-34 (Avg: 24)
	400	55	4d6+1014-34 (Avg: 24)
800	95	4d6+1014-34 (Avg: 24)