Iron Wall is a classic tower defense game where you have to plan your defenses and stay alive during a brutal attack in the Middle Ages.
The enemy's army is moving toward your castle after sounding their war horns. Since you are the last line of defense, what happens to the castle will rest on what you decide.
When you kill an enemy in Iron Wall, you get gold that you can use to make a strong defense. Archer Posts that shoot quickly, Ballistas that can go through armor, and Catapults that can destroy whole enemy platoons.