Defense Towers Towers have static defense or spy defense. Troop and spy buildings have defenses that depend on how many units you have. For example, if you have a level 1 castle with a guild, but you just fully unloaded, you have no defense, and without spy defense pots, you will lose every incoming spy action, no matter how weak the other person is. Because towers have static defense, they do not use any units. Since no units are used, towers make no plunder. Towers are essential in war, whether system or off system, because most likely you won't be fighting with full bars. Defense towers include: Defense Tower (T1-3) Defensive Fortress (T4) Arboreal Dungeon (T5) Red War Citadel (T6) Undersea Keep (T7) Defense Tower
Spy Defense Towers Spy defense Towers: Lookout Tower (T1-3) Lookout Fortress (T4) Changing Watchtower (T5) Descry Fasthold (T6) Beacon Tower (T7) Lookout Tower