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Increase number of defense cannons II, III, IV, V, VI, VII
| Location: |
Academy |
| Availability: |
Becomes available after building an
artillery depot |
| Action: |
Increasing the number of defensive cannon in a tower will
improve your rate of fire by 20%. The respective tower will fight enemies off more efficiently.
You should increase the number of defensive cannon in each specific tower to upgrade
it. |
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