add natural disasters and structures linked to certain disasters to block or limit damage,

- the rivers make waves which damage or even destroy the districts and do damage to the unit in the boxes touched

- the volcanoes would destroy the boxes and cause fires

- forest fires or other will spread and damage the districts

- meteors that damage or destroy districts according to the power of the meteor

- tsunamis that damage the districts

- tornadoes that damage the districts

- hurricanes that destroy the districts

- typhoons that weaken ships and damage nearby ports

and see other natural disasters that I did not mention