AddBox(position=(0,0,0), size=(2,0.5,2), color="gray")  # Start
AddPlank(position=(2,0.5,0), move="left-right", speed=2)
AddLavaZone(position=(0,-1,0), size=(10,0.5,10))  # Reset zone
AddGoalPlatform(position=(6,0.5,0), message="Builder Approved!")