I do not like the way the protection of newly spawned civilizations works with game version 1.16.6.
New civilizations seems to have a period of x turns where you can not declare war on them, fine I can see that this protection is needed.
But after these turns have ended they seems to have a secondary protection where you can not take their cities, only kill off all their troops and anything else in it (workers, ships, etc.).
But the city itself remains impossible to invade. After that you have no idea when you can invade it.
In my Greece game I declared war on Phoenicia as soon as I could (the normal way), but only after waiting several turns and declaring peace, wait for the peace treaty to end, could I finally invade the city the second time around.
Later in the same game Persia declared war on me some turns after their newbie protection ended. But again I could not invade all their cities (I think it was only the last one).
I also see that the troops during this secondary protection always withdraws the first time you attack and "win". So you have to attack the same troop twice within the same turn to kill it.
My suggestion is to get rid of this secondary protection all together as it makes for a very confusing gameplay.
Rather increase the number of turns where you can not declare war on them at all.
New civilizations seems to have a period of x turns where you can not declare war on them, fine I can see that this protection is needed.
But after these turns have ended they seems to have a secondary protection where you can not take their cities, only kill off all their troops and anything else in it (workers, ships, etc.).
But the city itself remains impossible to invade. After that you have no idea when you can invade it.
In my Greece game I declared war on Phoenicia as soon as I could (the normal way), but only after waiting several turns and declaring peace, wait for the peace treaty to end, could I finally invade the city the second time around.
Later in the same game Persia declared war on me some turns after their newbie protection ended. But again I could not invade all their cities (I think it was only the last one).
I also see that the troops during this secondary protection always withdraws the first time you attack and "win". So you have to attack the same troop twice within the same turn to kill it.
My suggestion is to get rid of this secondary protection all together as it makes for a very confusing gameplay.
Rather increase the number of turns where you can not declare war on them at all.