watch 02:38 The Loop (Games) Do you like this video? Description Increases the defense of siege units. Upgrade table Level Defense Costs Requirements Time 1 +0.5% 200.0K 40.0K 40.0K Assembly Charge I Level 1 4h 2 +1.0% 400.0K 60.0K 60.0K Siege Unit Defense I Level 1 4h 3 +1.5% 600.0K 100.0K 100.0K 75.0K - 4h 4 +3.0% 800.0K ? ? ? - 5 +5.0% ? ? ? ? - Retrieved from "https://riseofkingdoms.fandom.com/wiki/Alliance_Technology/Siege_Unit_Defense_I?oldid=6815" Community content is available under CC-BY-SA unless otherwise noted.