You have around 30 seconds before the spy infiltrates one of your houses and you will not be able to click on him any more. If you quickly click on the slinking spy in your town before he infiltrates a home he will be immediately destroyed. If an AI is attempting to infiltrate your base you will receive a notification. Houses that contain spies are considered Infiltrated Houses.īases of Operations have no purpose when not playing against AIs or other players. A Base of Operations is required to send spies to other islands. It has two major components: Sabotaging enemy island with your spies, and defending your own city from enemy spies. Espionage is a new gameplay addition to Anno 1404: Venice.