Prepare for an epic medieval siege in Iron Wall, where strategic tower defense is key to surviving relentless enemy onslaughts. Use earned gold to construct powerful defenses like Archer Posts, Ballistas, and Catapults. Your tactical prowess will decide the castle's fate against advancing foes. How long can you hold the line? Iron Wall, medieval, castle defense, tower defense, strategy game, siege, archer, ballista, catapult, tactical, defense, survival, online, free, gameplay, tactics, battle, endurance, fort.