Editing Effects

'''Effects''' are multiplier-based modifiers applied by [[Choices]], [[Alliances|alliance types]], and game events in [[Main Page|Project Rebearth]]. Each effect targets a specific aspect of a settlement's economy or conditions, scaling the base values up or down. Multiple effects of the same type from different sources stack multiplicatively.

== Effect types ==
There are 14 effect types in the game. Each one modifies a different aspect of settlement operation.

{| class="wikitable sortable"
|-
! Effect !! What it modifies !! Affected resources
|-
| Population growth || Rate at which new residents move into housing || [[Population]]
|-
| Food production || Output of all buildings that produce {{Icon|Food}} || {{Icon|Food}}
|-
| Food consumption || {{Icon|Food}} consumed by housing buildings || {{Icon|Food}}
|-
| Goods production || Output of buildings that produce raw materials || {{Icon|Wood}}, {{Icon|Stone}}, {{Icon|Earth}}
|-
| All production || Output of every production building || All resources
|-
| [[Happiness]] || Settlement happiness level || —
|-
| Raid risk || Probability of [[Raid]] events || —
|-
| Taxation || {{Icon|Coin}} income from the [[Taxation]] system || {{Icon|Coin}}
|-
| Export cost || Cost of selling goods through the [[Market]] or [[Port]] || —
|-
| Import cost || Cost of buying goods through the [[Market]] or [[Port]] || —
|-
| Research speed || Rate of {{Icon|Knowledge}} generation at the [[University]] || {{Icon|Knowledge}}
|-
| Expedition cost || {{Icon|Food}}, {{Icon|Knowledge}}, and [[Population]] costs of [[Expeditions]] || {{Icon|Food}}, {{Icon|Knowledge}}
|-
| Construction cost || Cost of constructing buildings || —
|-
| Accident rate || Probability of [[Accident]] events || —
|}

== Sources ==
Effects are applied by [[Choices]], [[Alliances|alliance types]], and automatic game events. The following table lists every source of effects in the game.

=== Population growth ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Cramped Quarters]] || ×1.3 || [[Choices|Choice]]
|}

=== Food production ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Vegan Society]] || ×1.2 || [[Choices|Choice]]
|-
| [[Dubious Working Rules]] || ×1.1 || [[Choices|Choice]]
|-
| [[Worker Safety]] || ×0.9 || [[Choices|Choice]]
|}

=== Food consumption ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Lavish Rations]] || ×1.2 || [[Choices|Choice]]
|-
| [[Normal Rations]] || ×1.0 || [[Choices|Choice]] (default)
|-
| [[Low Rations]] || ×0.8 || [[Choices|Choice]]
|}

=== Goods production ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Dubious Working Rules]] || ×1.2 || [[Choices|Choice]]
|-
| [[Worker Safety]] || ×0.8 || [[Choices|Choice]]
|}

=== All production ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[New Town Boost]] || ×2.0 || Automatic (4 days)
|-
| [[Great Federation]] || ×1.1 || [[Alliances|Alliance type]]
|-
| [[Science League]] || ×0.8 || [[Alliances|Alliance type]]
|}

=== Happiness ===
{| class="wikitable"
|-
! Source !! Value !! Type
|-
| [[Lavish Rations]] || +20% || [[Choices|Choice]]
|-
| [[Worker Safety]] || +10% || [[Choices|Choice]]
|-
| [[Science League]] || +10% || [[Alliances|Alliance type]]
|-
| [[Dubious Working Rules]] || -20% || [[Choices|Choice]]
|-
| [[Low Rations]] || -20% || [[Choices|Choice]]
|-
| [[Cramped Quarters]] || -30% || [[Choices|Choice]]
|-
| [[Taxation]] || -30% || [[Choices|Choice]]
|-
| [[Food Shortage]] || -50% || Automatic
|}

=== Raid risk ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Trade Alliance]] || ×1.2 || [[Alliances|Alliance type]]
|-
| [[Great Federation]] || ×0.8 || [[Alliances|Alliance type]]
|-
| [[New Town Boost]] || ×0.5 || Automatic (4 days)
|}

=== Taxation ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Trade Alliance]] || ×1.1 || [[Alliances|Alliance type]]
|-
| [[Great Federation]] || ×0.8 || [[Alliances|Alliance type]]
|}

=== Export cost ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Import Focus]] || ×1.2 || [[Choices|Choice]]
|-
| [[Neutral Focus]] || ×1.0 || [[Choices|Choice]] (default)
|-
| [[Trade Alliance]] || ×0.9 || [[Alliances|Alliance type]]
|-
| [[Export Focus]] || ×0.85 || [[Choices|Choice]]
|}

=== Import cost ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Export Focus]] || ×1.2 || [[Choices|Choice]]
|-
| [[Neutral Focus]] || ×1.0 || [[Choices|Choice]] (default)
|-
| [[Trade Alliance]] || ×0.9 || [[Alliances|Alliance type]]
|-
| [[Import Focus]] || ×0.85 || [[Choices|Choice]]
|}

=== Research speed ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Science League]] || ×1.2 || [[Alliances|Alliance type]]
|}

=== Expedition cost ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Science League]] || ×0.8 || [[Alliances|Alliance type]]
|}

=== Construction cost ===
No choices or alliance types currently modify construction cost.

=== Accident rate ===
{| class="wikitable"
|-
! Source !! Multiplier !! Type
|-
| [[Dubious Working Rules]] || ×1.2 || [[Choices|Choice]]
|-
| [[Worker Safety]] || ×0.2 || [[Choices|Choice]]
|}

== How effects work ==
Effects are expressed as multipliers applied to a base value. A multiplier of ×1.0 means no change, values above ×1.0 increase the stat, and values below ×1.0 decrease it. For example, [[Worker Safety]] applies a ×0.2 accident rate multiplier, reducing workplace accidents to 20% of their base frequency.

When multiple effects of the same type are active (for example, from a choice and an alliance type), they stack multiplicatively. If a settlement has both [[Vegan Society]] (×1.2 food production) and [[Dubious Working Rules]] (×1.1 food production) active, the combined food production multiplier is ×1.32 (1.2 × 1.1).

For cost-reducing effects like export cost and import cost, lower multipliers are better. A ×0.85 export cost multiplier means exports cost only 85% of the base price, saving the player 15% on every trade.

== Changelog ==
{{Changelog}}

== See also ==
* [[Choices]]
* [[Alliances]]
* [[Happiness]]
* [[Events]]

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[[Category:Game mechanics]]