The Supply Boost is a feature of some buildings and items to increase all supply collections from the city by certain percent. Supply boosts can also be activated from the Friends Tavern by paying for it with Tavern Silver.
The Supply Boost is applied at collection time. The Supply Boost doesn't affect any supply collections from Great Buildings.
After collection it provides for the first 40 supply collections a +60% supply boost at level 1 and +145% supply boost at level 10. After level 10 +5% supply boost is gained with each consecutive level.
After collection it provides for the first 75 supply collections a +70% supply boost at level 1 and +200% supply boost at level 10. After level 10 +5% supply boost is gained with each consecutive level.
While before Arctic Future, after collection it provides for the first 4 supply collections a +5% supply boost at level 1 and for the first 5 supply collections +17% supply boost at level 10. After level 10 +1.18% or less supply boost is gained with each consecutive level together with an increasing number of boosted supply collections.
Provides +2% supply boost when adjacent to two other different buildings from the Winter Village Set or +5% supply boost when adjacent to three different buildings from the set. The boost values remain constant through the ages.
Provides from +8% to +15% supply boost when adjacent to two other building from the Classical Garden Set. The boost value depends on the buildings age.
Provides from +8% to +15% supply boost when adjacent to at least two other different building from the Indian Fountain Set. The boost value depends on the buildings age.
Provides, when adjacent to at least one other building from the Butterfly Sanctuary Set, a +5% supply boost. The boost value remains constant through the ages.
Provides, when adjacent to at least two other different buildings from the Piazza Set, from +4% to +9% supply boost at level 1 and from +8% to +13% supply boost at level 2. The boost value is dependent on the buildings age.
Provides +10% supply boost. The boost value remains constant through the ages. The Trader Ship is one of the three options when upgradingThe Ship to level 7.
Provides, when adjacent to at least one other building from the Butterfly Sanctuary Set, a +10% supply boost. The boost value remains constant through the ages.