How does the building upgrade system work in Call of Dragons?

Best answer

CityBuilderMaster2022-02-15
The building upgrade system allows you to improve your city's structures to enhance resource production, troop training, and defensive capabilities. Upgrade buildings using resources and time.

Other answers

ArchitectGamer772022-02-18

Building upgrade system: - Enhances resource production, troop training, and defensive capabilities - Upgrade using resources and time

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