Corrosive gas

corrosive gas

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	AcidGas
	AjiConch
Infobox data from game version 2.0.207.72

corrosive gas

Even now the nimbus of vaporized acid is condensing, starting to settle on its colonized surfaces, starting to sink through their soft edges.

Perfect

Corrosive gas is a damaging gas that can seep through walls and other occluding objects, often destroying them in the process.

Sources

Common sources of corrosive gas, with their level and density, include:

Source	Gas Level	Gas Density	Reference
Corrosive Gas Generation	Mutation Level	800 per turn, divided evenly into adjacent squares
billowing conch of the Aji	5	800 per turn, divided evenly into non-solid adjacent squares
acid gas grenade mk I	1	40
acid gas grenade mk II	1	80
acid gas grenade mk III	1	120
tartbeard or elder tartbeard	1	80
worker ant	1	100
agolmaggot (on death)	1	60
defoliant pump (on item destruction)	1	60
fungicide pump (on item destruction)	1	60
fuming vents	1	10
acid (when vaporized)	1	Drams / 20

Damage

The damage done by corrosive gas depends on the target:

• Corrosive gas deals damage to creatures and robots.
• Corrosive gas deals significantly increased damage to:
  • Walls, doors, furniture, chests, statues, and similar objects.
  • brooding puffs.
• Corrosive gas deals no damage to anything with the Item tag. This includes all weapons, armor, equipment, scrap, cybernetics, energy cells, garbage, food, trade goods, corpses, books, water containers, urns and vases, quest items, and most other similar items a character might carry around in their inventory. Furniture items, such as chests or weapon racks are affected, but any items within will drop to the ground undamaged.

The following damage formulas are used to calculate corrosive gas damage:

	Formula	Notes
Creatures and Robots	( Density × GasLevel ) / 200	(rounded up)
Walls and Similar Objects	( 0.75 × GasLevel + 0.25 ) × Density	(rounded up)

In practice, gas damage 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. Its density, which is the main predictor of damage, is always changing.

The density of corrosive gas can get much higher than 100 with the Corrosive Gas Generation mutation. With that mutation, a creature releases 100 density units of gas into the 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.

The following table indicates how much damage corrosive gas of a certain level will do per round, depending on gas level and density. Keep in mind that enemy acid resistance may reduce these numbers.

Gas Level	Density	Gas damage per round
		creatures / robots	walls / objects
1	50	1	50
	100	1	100
	200	1	200
	400	2	400
	800	4	800
	1600	8	1600
2	50	1	88
	100	1	175
	200	2	350
	400	4	700
	800	8	1400
	1600	16	2800
3	50	1	125
	100	2	250
	200	3	500
	400	6	1000
	800	12	2000
	1600	24	4000
4	50	1	163
	100	2	325
	200	4	650
	400	8	1300
	800	16	2600
	1600	32	5200
5	50	2	200
	100	3	400
	200	5	800
	400	10	1600
	800	20	3200
	1600	40	6400
6	50	2	238
	100	3	475
	200	6	950
	400	12	1900
	800	24	3800
	1600	48	7600
7	50	2	275
	100	4	550
	200	7	1100
	400	14	2200
	800	28	4400
	1600	56	8800
8	50	2	313
	100	4	625
	200	8	1250
	400	16	2500
	800	32	5000
	1600	64	10000
9	50	3	350
	100	5	700
	200	9	1400
	400	18	2800
	800	36	5600
	1600	72	11200
10	50	3	388
	100	5	775
	200	10	1550
	400	20	3100
	800	40	6200
	1600	80	12400

Gas Level	Density	Gas damage per round
		creatures / robots	walls / objects
11	50	3	425
	100	6	850
	200	11	1700
	400	22	3400
	800	44	6800
	1600	88	13600
12	50	3	463
	100	6	925
	200	12	1850
	400	24	3700
	800	48	7400
	1600	96	14800
13	50	4	500
	100	7	1000
	200	13	2000
	400	26	4000
	800	52	8000
	1600	104	16000
14	50	4	538
	100	7	1075
	200	14	2150
	400	28	4300
	800	56	8600
	1600	112	17200
15	50	4	575
	100	8	1150
	200	15	2300
	400	30	4600
	800	60	9200
	1600	120	18400
16	50	4	613
	100	8	1225
	200	16	2450
	400	32	4900
	800	64	9800
	1600	128	19600
17	50	5	650
	100	9	1300
	200	17	2600
	400	34	5200
	800	68	10400
	1600	136	20800
18	50	5	688
	100	9	1375
	200	18	2750
	400	36	5500
	800	72	11000
	1600	144	22000
19	50	5	725
	100	10	1450
	200	19	2900
	400	38	5800
	800	76	11600
	1600	152	23200
20	50	5	763
	100	10	1525
	200	20	3050
	400	40	6100
	800	80	12200
	1600	160	24400

Gas Level	Density	Gas damage per round
		creatures / robots	walls / objects
21	50	6	800
	100	11	1600
	200	21	3200
	400	42	6400
	800	84	12800
	1600	168	25600
22	50	6	838
	100	11	1675
	200	22	3350
	400	44	6700
	800	88	13400
	1600	176	26800
23	50	6	875
	100	12	1750
	200	23	3500
	400	46	7000
	800	92	14000
	1600	184	28000
24	50	6	913
	100	12	1825
	200	24	3650
	400	48	7300
	800	96	14600
	1600	192	29200
25	50	7	950
	100	13	1900
	200	25	3800
	400	50	7600
	800	100	15200
	1600	200	30400
26	50	7	988
	100	13	1975
	200	26	3950
	400	52	7900
	800	104	15800
	1600	208	31600
27	50	7	1025
	100	14	2050
	200	27	4100
	400	54	8200
	800	108	16400
	1600	216	32800
28	50	7	1063
	100	14	2125
	200	28	4250
	400	56	8500
	800	112	17000
	1600	224	34000
29	50	8	1100
	100	15	2200
	200	29	4400
	400	58	8800
	800	116	17600
	1600	232	35200
30	50	8	1138
	100	15	2275
	200	30	4550
	400	60	9100
	800	120	18200
	1600	240	36400