private static function loadLeaderboards($gameName) {
        $url = "http://steamcommunity.com/stats/$gameName/leaderboards/?xml=1";
        $boardsData = new \SimpleXMLElement(file_get_contents($url));

        if(!empty($boardsData->error)) {
            throw new SteamCondenserException((string) $boardsData->error);
        }

        self::$leaderboards[$gameName] = [];
        foreach($boardsData->leaderboard as $boardData) {
            $leaderboard = new GameLeaderboard($boardData);
            self::$leaderboards[$gameName][$leaderboard->getId()] = $leaderboard;
        }
    }