"The Windmill harnesses air power to automatically churn out energy bricks. It will make more as long as there are no energy bricks next to it already, and it has an empty space to put one in."

Bricks White Brick 25
Brick Red 15
Brick Wheel 5
Brick Energy 1
Terrain(s) Normal
Speed N/A
Action(s) None. (Automatically creates an energy brick in any free space surrounding it)

The Windmill is a unit introduced in WorldBuilder 2. It automatically creates energy bricks in any free space around itself.