diff --git a/scenes/worlds/test_level.tscn b/scenes/worlds/test_level.tscn
new file mode 100644
index 0000000..9935db9
--- /dev/null
+++ b/scenes/worlds/test_level.tscn
@@ -0,0 +1,70 @@
+[gd_scene load_steps=1 format=3]
+
+[node name="TestLevel" type="Node3D"]
+
+[node name="Ground" type="StaticBody3D" parent="."]
+
+[node name="GroundMesh" type="MeshInstance3D" parent="Ground"]
+mesh = SubResource("mesh_ground")
+
+[node name="Props" type="Node3D" parent="."]
+
+[node name="Prop1" type="StaticBody3D" parent="Props"]
+
+[node name="Prop1Mesh" type="MeshInstance3D" parent="Props/Prop1"]
+mesh = SubResource("mesh_box1")
+
+[node name="Prop2" type="StaticBody3D" parent="Props"]
+
+[node name="Prop2Mesh" type="MeshInstance3D" parent="Props/Prop2"]
+mesh = SubResource("mesh_cylinder")
+
+[node name="Prop3" type="StaticBody3D" parent="Props"]
+
+[node name="Prop3Mesh" type="MeshInstance3D" parent="Props/Prop3"]
+mesh = SubResource("mesh_sphere")
+
+[node name="Prop4" type="StaticBody3D" parent="Props"]
+
+[node name="Prop4Mesh" type="MeshInstance3D" parent="Props/Prop4"]
+mesh = SubResource("mesh_box2")
+
+[node name="Prop5" type="StaticBody3D" parent="Props"]
+
+[node name="Prop5Mesh" type="MeshInstance3D" parent="Props/Prop5"]
+mesh = SubResource("mesh_box3")
+
+[node name="Sun" type="DirectionalLight3D" parent="."]
+rotation_degrees = Vector3(-45.0, 0.0, 0.0)
+shadow_enabled = true
+
+[node name="WorldEnvironment" type="WorldEnvironment" parent="."]
+environment = SubResource("env_bg")
+
+[node name="PlayerSpawn" type="Marker3D" parent="."]
+position = Vector3(0, 1.0, 0)
+
+[sub_resource type="BoxMesh" id="mesh_ground"]
+size = Vector3(40, 1, 40)
+
+[sub_resource type="BoxMesh" id="mesh_box1"]
+size = Vector3(1.5, 2.0, 1.5)
+
+[sub_resource type="CylinderMesh" id="mesh_cylinder"]
+top_radius = 0.5
+bottom_radius = 0.5
+height = 2.0
+
+[sub_resource type="SphereMesh" id="mesh_sphere"]
+radius = 0.75
+
+[sub_resource type="BoxMesh" id="mesh_box2"]
+size = Vector3(1.0, 3.0, 1.0)
+
+[sub_resource type="BoxMesh" id="mesh_box3"]
+size = Vector3(2.0, 1.0, 2.0)
+
+[sub_resource type="Environment" id="env_bg"]
+background_mode = 1
+background_color = Color(0.4, 0.6, 0.9, 1)
+ambient_light_energy = 0.6
diff --git a/scripts/player.gd b/scripts/player.gd
new file mode 100644
index 0000000..06a2f78
--- /dev/null
+++ b/scripts/player.gd
@@ -0,0 +1,111 @@
+class_name Player
+extends CharacterBody3D
+## The player character controller.
+##
+## A simple CharacterBody3D with WASD/arrow locomotion, gravity, and a
+## first-person Camera3D.  Reads the spawn point from the current scene's
+## `PlayerSpawn` Marker3D (see docs/architecture/pc2_test_level.md §3).
+##
+## No networking, no chunk code, no avatar UI — PC2 is local-only.
+
+
+# ---------------------------------------------------------------------------
+# Movement constants
+# ---------------------------------------------------------------------------
+
+const WALK_SPEED: float = 5.0
+const JUMP_VELOCITY: float = -4.5
+const GRAVITY: float = 9.8
+
+
+# ---------------------------------------------------------------------------
+# Input state
+# ---------------------------------------------------------------------------
+
+var _input_direction := Vector2.ZERO
+
+
+# ---------------------------------------------------------------------------
+# _ready — spawn at PlayerSpawn marker
+# ---------------------------------------------------------------------------
+
+func _ready() -> void:
+	# Per §3 of pc2_test_level.md: look up PlayerSpawn from the current
+	# scene root.  The lookup walks the full subtree (recursive=true) so
+	# it finds the marker whether it is a direct child of the level or
+	# nested deeper.
+	var spawn := get_tree().current_scene.find_child("PlayerSpawn", true, false)
+	if spawn is Node3D:
+		global_position = spawn.global_position
+		# Align player forward with spawn yaw (optional polish).
+		var spawn_yaw := spawn.rotation.y
+		rotation.y = spawn_yaw
+	else:
+		push_warning("player.gd: no PlayerSpawn marker found; spawning at origin")
+		global_position = Vector3(0, 1.0, 0)
+
+
+# ---------------------------------------------------------------------------
+# _unhandled_input — capture keyboard / mouse for movement
+# ---------------------------------------------------------------------------
+
+func _unhandled_input(event: InputEvent) -> void:
+	if event is InputEventKey:
+		var key := event as InputEventKey
+		if key.pressed:
+			_update_input_direction(key)
+		else:
+			_clear_input_direction(key)
+	elif event is InputEventMouseMotion:
+		_handle_mouse_look(event as InputEventMouseMotion)
+
+
+func _update_input_direction(key: InputEventKey) -> void:
+	match key.keycode:
+		KEY_W, KEY_UP:
+			_input_direction.y += 1.0
+		KEY_S, KEY_DOWN:
+			_input_direction.y -= 1.0
+		KEY_A, KEY_LEFT:
+			_input_direction.x -= 1.0
+		KEY_D, KEY_RIGHT:
+			_input_direction.x += 1.0
+
+
+func _clear_input_direction(key: InputEventKey) -> void:
+	match key.keycode:
+		KEY_W, KEY_UP:
+			_input_direction.y -= 1.0
+		KEY_S, KEY_DOWN:
+			_input_direction.y += 1.0
+		KEY_A, KEY_LEFT:
+			_input_direction.x += 1.0
+		KEY_D, KEY_RIGHT:
+			_input_direction.x -= 1.0
+
+
+func _handle_mouse_look(event: InputEventMouseMotion) -> void:
+	rotation.y -= event.relative.x * 0.002
+
+
+# ---------------------------------------------------------------------------
+# Physics — gravity, jump, move_and_slide
+# ---------------------------------------------------------------------------
+
+func _physics_process(delta: float) -> void:
+	# Apply gravity.
+	if not is_on_floor():
+		velocity.y -= GRAVITY * delta
+
+	# Jump.
+	if is_on_floor() and Input.is_action_just_pressed("ui_accept"):
+		velocity.y = JUMP_VELOCITY
+		return
+
+	# Build movement direction from input.
+	var direction := (_input_direction.x * transform.basis.x +
+		_input_direction.y * transform.basis.z).normalized()
+	velocity.x = direction.x * WALK_SPEED
+	velocity.z = direction.z * WALK_SPEED
+
+	move_and_slide()