public static void deleteWorld(int ID) {
		if (ID < 0 || ID > 4) {
			if (ChristmasCrashers.isDebugModeEnabled())
				System.err.println("Failed to delete world " + ID + " - invalid world ID (must be between 0 and 4, inclusive).");
			return;
		}
		if (worlds[ID] == null) {
			if (ChristmasCrashers.isDebugModeEnabled())
				System.err.println("Failed to delete world " + ID + " - world does not exist.");
			return;
		}
		World[] worldsToDelete = {worlds[ID]};
		new Thread(new DeleteWorldsTask(worldsToDelete)).start();
		worlds[ID] = null;
	}