diff --git a/src/game/engine/scenes/world_map/world_map_arena.gd b/src/game/engine/scenes/world_map/world_map_arena.gd
index 20ec1121..1e312484 100644
--- a/src/game/engine/scenes/world_map/world_map_arena.gd
+++ b/src/game/engine/scenes/world_map/world_map_arena.gd
@@ -29,6 +29,7 @@ var _seed: int = 0
 var _result_dir: String = ""
 var _victory_manager: RefCounted = null
 var _finished: bool = false
+var _screenshot_taken: bool = false
 
 
 func setup(world_map: Node) -> void:
@@ -155,6 +156,15 @@ func _on_turn_ended(_turn_number: int, _player_index: int) -> void:
 	if _turn_label != null:
 		_turn_label.text = "turn %d / %d" % [GameState.turn_number, _turn_limit]
 
+	# Capture a viewport PNG at a configurable turn so the orchestrator can
+	# composite the 4 per-match screenshots into a quad-grid image — host
+	# screenshot tools don't see native Wayland windows via x11grab, so we
+	# capture from inside each Godot process and stitch them externally.
+	var shot_turn: int = EnvConfig.get_int("AI_ARENA_SCREENSHOT_TURN", -1)
+	if shot_turn > 0 and GameState.turn_number == shot_turn and not _screenshot_taken:
+		_screenshot_taken = true
+		_capture_viewport_screenshot.call_deferred()
+
 	if Time.get_ticks_msec() - _start_ticks_msec > WALL_CLOCK_LIMIT_MSEC:
 		var winner_clock: int = _pick_winner_by_score()
 		_finish(winner_clock, "wall_clock_timeout")
@@ -165,6 +175,27 @@ func _on_turn_ended(_turn_number: int, _player_index: int) -> void:
 		_finish(winner_score, "score")
 
 
+func _capture_viewport_screenshot() -> void:
+	if _result_dir.is_empty():
+		return
+	var viewport: Viewport = _world_map.get_viewport()
+	if viewport == null:
+		return
+	var texture: ViewportTexture = viewport.get_texture()
+	if texture == null:
+		return
+	var image: Image = texture.get_image()
+	if image == null:
+		return
+	DirAccess.make_dir_recursive_absolute(_result_dir)
+	var path: String = "%s/%s_shot.png" % [_result_dir, _match_id]
+	var err: Error = image.save_png(path)
+	if err != OK:
+		push_warning("[AI ARENA] screenshot save failed: %s" % error_string(err))
+		return
+	print("[AI ARENA] screenshot saved: %s" % path)
+
+
 func _on_victory(player_index: int, victory_type: String) -> void:
 	if _finished:
 		return