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Oxygen Not Included
Terraria
Against the Storm
Anno
Project Zomboid
Valheim
Graveyard Keeper
Palworld
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Research
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Sanitation
Sanitation
Tier
2
Cost
20 Research points
Spaced Out!
Liquids
Unlocks
Gunk Extractor
Lavatory
Mesh Tile
Shower
Sink
Requires
Plumbing
Required by
Flow Redirection
