Decrees are your first line of defense against disasters. When an instant disaster happens and the corresponding decree is selected, the damage is halved. When a lasting disaster happens and the corresponding decree is selected, the effort required to clear the disaster is halved. Some buildings boost the effectiveness of decrees, and upgrading your sensors will improve your ability to guess the upcoming disaster.
Note that the decree must be active before the disaster occurs to count as a correct decree.
Decrees to Disasters¶