Module effects reference

Machines take modules, and modules change what the machine produces.

The three stats

Every ordinary module carries a percentage bonus to three stats, plus a tier. What each stat does depends on the machine it goes into, as that machine’s instruction sheet lists:

Machine	Efficiency	Performance	Quality
Water Purifier	Power consumption	Amount removed per night	Maximum purity (½ effect)
Moisture Farm	Power consumption	Volume produced	Purity
Furnace	Power consumption	No effect	Maximum purity
AgeWell	Power consumption	Power consumption	+1 day of aging per 125 Quality
Cryptographic Desequencer	Power consumption	Speed	No effect
Mirage Projector	Power consumption	Attractiveness (¼ effect)	Attractiveness (½ effect)
Alarm System	Power consumption	Prevention rate bonus	No effect

That table is what the sheets say. The game’s code doesn’t always follow their ratios: in this build the Mirage Projector and Water Purifier count the full totals, and the AgeWell halves Efficiency and Performance before they lower power.

Those percentages are not fixed per module name. Each kind starts from the same stats, but a random drop rolls a shape and up to two effects that scale them; read the complete tooltip. Try your own modules in the module assembler, which follows the code.

The exception is the capped Neural Core module, which carries fixed values: +100% performance, −100% efficiency and +50% quality.

Furnace modules

Module	Effect
Junk Processing Module	Converts 6 Junk into 4 Scrap Metal
Blast Furnace Module	Uses 3 input for 2 output per night, at lower purity

Until patch 48.3.12 the Junk Processing Module quietly drew twice the power it displayed.

Getting modules back out

A module is stuck once installed. The Module Extractor removes it and lasts 6 uses.

The Alarm Transmitter Module grants +1 reputation per night.

Sources: in-game descriptions, machine instruction sheets and game data (build demo 049-Rev3-L), plus patch notes 48.3.10 and 48.3.12. See About for how these numbers are produced.