Swodaems wrote:MarbitChow, if the door, a tower, or a section of wall is destroyed, what are the consequences? (Will they need to be fixed with money later? Will collapsing structures injure units on or near them, and, if so, how badly?)
Destroying a gate simply makes the gate squares passable.
Destroying a 4-square section of wall will collapse the 4 squares above it, 2 squares in. Any non-flying units standing there will fall. (Falling damage is a hidden mechanic.)
Destroying a tower will collapse 4 squares above it, at least 2 squares in, and may collapse the entire tower. Any non-flying units standing there will fall.
Units that are underneath the collapsing structures also take falling damage, exactly as if they had been standing in the squares above them.
If both towers are destroyed, the city effectively drops from a Level 3 to a Level 2. If the entire wall is destroyed as well, the city effectively drops to a Level 1.
If the city's level remains unchanged, the city will be completely repaired at the start of the next turn. If the level drops, the missing structures will not be rebuilt (so Level 2 will fix the wall, but the towers don't come back).
I'll add the above to the Rules City Structure section for future reference.