private static Tuple <string, string> RefreshThumb(DbGame game)
        {
            lock (Lock)
            {
                var uri = new Uri(game.ThumbImageUrl);

                var filename = $"/Images/Thumb/{Path.GetFileName(uri.LocalPath)}";

                string contentType;
                byte[] data;

                using (var wc = new WebClient())
                {
                    wc.Headers.Add("user-agent", "MTXZoneThumbCacher/1.0");
                    data        = wc.DownloadData(game.ThumbImageUrl);
                    contentType = wc.ResponseHeaders["Content-Type"];
                }

                if (!new[] { "image/png", "image/jpeg" }.Contains(contentType))
                {
                    return(null);
                }

                var path = $"{HostingEnvironment.ApplicationPhysicalPath}{filename.Substring(1).Replace("/", @"\")}";
                File.WriteAllBytes(path, data);

                DbAccess.SaveThumb(game.Id, filename, contentType);

                return(new Tuple <string, string>(filename, contentType));
            }
        }