Chemicals
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The 48 core chemicals that drive every creature in the Interior, by category. The game code defines 118 chemicals in total; the 70 beyond these are species-specific and are not listed here. How these chemicals interact — organs, reactions, receptors, emitters — is described in Biochemistry.
Energy (5)
Drives (14)
Hormones (10)
Nutrients (5)
| Chemical | Used by species |
| Protein | — |
| Fat | — |
| Water | — |
| Vitamin | — |
| Mineral | — |
Damage & Healing (4)
| Chemical | Used by species |
| Injury | — |
| Antibody | — |
| Toxin | Grendel |
| HealingFactor | — |
Reproduction (3)
| Chemical | Used by species |
| Fertility | — |
| Pregnancy | — |
| MatingDrive | — |
Neurotransmitters (5)
| Chemical | Used by species |
| GABA | — |
| Glutamate | — |
| Acetylcholine | — |
| PreREM | — |
| REM | — |
| Chemical | Used by species |
| Age | — |
| Dead | — |