diff --git a/scripts/Catapult.gd b/scripts/Catapult.gd
index c47294fb..eaaf9e82 100644
--- a/scripts/Catapult.gd
+++ b/scripts/Catapult.gd
@@ -438,7 +438,12 @@ func _start_game(world := "") -> void:
 			var world_str := ""
 			if world != "":
 				world_str = "--world \"%s\"" % world
-			var command = "cd /d %s && start cataclysm-tiles.exe --userdir \"%s/\" %s" % [Paths.game_dir, Paths.userdata, world_str]
+
+			var exe_file = "cataclysm-tiles.exe"
+			if Settings.read("game") == "bn" and Directory.new().file_exists(Paths.game_dir.plus_file("cataclysm-bn-tiles.exe")):
+				exe_file = "cataclysm-bn-tiles.exe"
+
+			var command = "cd /d %s && start %s --userdir \"%s/\" %s" % [Paths.game_dir, exe_file, Paths.userdata, world_str]
 			OS.execute("cmd", ["/C", command], false)
 		_:
 			return