• Utility: Wood Bamboo Wall
  • Requirement: 35 woods
  • Destruction Panel (F7): 12 woods
  • Chance for withstand trebuchet/siege ballista/glider projectile: 0%

upgrade 1 (F6): Stone

  • Utility: Stone Bamboo Wall
  • Requirement: 35 Stones
  • Destruction Panel (F7): 12 woods + 12 stones
  • Chance for withstand trebuchet/siege ballista/glider projectile: 50%

Upgrade 2 (F6): Bronze

  • Utility: Bronze Bamboo Wall
  • Requirement: 10 woods + 20 Bronze ingots
  • Destruction Panel (F7): 18 woods + 6 Bronze ingots
  • Chance for withstand trebuchet/siege ballista/glider projectile: 66%

Upgrade 3 (F6): Volcanic

  • Utility: Volcanite Bamboo Wall
  • Requirement: 35 Volcanites
  • Destruction Panel (F7): 12 woods + 12 Volcanites
  • Chance for withstand trebuchet/siege ballista/glider projectile: 75%
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