diff --git a/growth/firewall.gd b/growth/firewall.gd
new file mode 100644
index 0000000..ad6b184
--- /dev/null
+++ b/growth/firewall.gd
@@ -0,0 +1,9 @@
+extends Node
+
+
+func _on_timer_timeout():
+	queue_free()
+
+
+func _on_area_2d_body_entered(body):
+	pass # TODO: deal damage to body
diff --git a/growth/firewall.gd.uid b/growth/firewall.gd.uid
new file mode 100644
index 0000000..5514630
--- /dev/null
+++ b/growth/firewall.gd.uid
@@ -0,0 +1 @@
+uid://bmt6oqrixatxt
diff --git a/growth/firewall.tscn b/growth/firewall.tscn
new file mode 100644
index 0000000..a626fda
--- /dev/null
+++ b/growth/firewall.tscn
@@ -0,0 +1,20 @@
+[gd_scene load_steps=2 format=3 uid="uid://33rplipuwv2k"]
+
+[ext_resource type="Script" uid="uid://bmt6oqrixatxt" path="res://firewall.gd" id="1_qwxdp"]
+
+[node name="Firewall" type="Node"]
+script = ExtResource("1_qwxdp")
+
+[node name="AnimatedSprite2D" type="AnimatedSprite2D" parent="."]
+
+[node name="Area2D" type="Area2D" parent="."]
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Area2D"]
+
+[node name="Timer" type="Timer" parent="."]
+process_callback = 0
+one_shot = true
+autostart = true
+
+[connection signal="body_entered" from="Area2D" to="." method="_on_area_2d_body_entered"]
+[connection signal="timeout" from="Timer" to="." method="_on_timer_timeout"]