Draw sturdy defensive fortifications with fingertips to block the enemy's crazy attack. Wall trenches, traps, and obstacles can become a part of defense as long as you can draw them. Every stroke is a barrier to protect our home, and every line carries the hope of protection. When the enemy is blocked by your hand drawn defense line, you feel a sense of accomplishment. Use creativity and wisdom to create the most indestructible defense system and become the strongest line drawing defense master.