The Fortification Wall is an advanced defensive wall that blocks most Tech 1/Tech 2 units and low-altitude projectiles.

Use them to funnel enemies into a choke point or to block a path.

They can also be used to help protect your laser towers and will take quite a beating before they break. Advanced walls have almost four times the health of a basic Dragon’s Teeth, and are great when used against Alien Raptors and Scavengers.

Walls resist crushing from heavy T2 units, but some massive T3 can still plow right through them.