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Civic record · improvements

Straw Mattresses

Straw Mattresses affects +10 Energy regeneration. Compare the documented variants across 1 building type before choosing where to spend. Matching names do not guarantee matching costs or requirements.

Early Access · current recordPatch context 0.4.5Checked
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Secondary referenceSource build: not stated. Checked 2026-09-27.Inspect the exact source record ↗

Documented record

Available in
Robber Baron's Fortress
Documented effects
+10 Energy regeneration
Building variants · attributed secondary reference
BuildingImprovementTierReference costReference timeEffect
Robber Baron's FortressStraw Mattresses 114006h+10 Energy regeneration
Robber Baron's FortressStraw Mattresses 226008h+10 Energy regeneration
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Use this record for a decision

The documented effect of Straw Mattresses is +10 Energy regeneration. Choose a building variant from the ledger, then confirm that the matching slot and prerequisite are available. Compare the effect with your current bottleneck; spending more on a different tier is useful only when its additional effect addresses that problem.

Related patch context

0.4.5 · changed

Burglary frequency after 0.4.5 ↗

Burglary rates were rebalanced. The notes do not provide a universal safe threshold or guarantee that a security improvement prevents every burglary.

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Connected records

Read the evidence correctly

Official patch notes establish the shipped changes they name. Secondary figures remain attributed reference values until checked in the installed game.

Source methods ↗