// сгенерировано студией через Edit/Paste Special/Paste JSON as Classes
public class Rootobject
{
    public Response response { get; set; }
}

public class Response
{
    public int game_count { get; set; }
    public Game[] games { get; set; }
}

public class Game
{
    public int appid { get; set; }
    public int playtime_forever { get; set; }
}

string url = "http://api.steampowered.com/IPlayerService/GetOwnedGames/v0001/?key=5DDE73742302BAFF52D2B0D72DED476B&steamid=76561198226175440";
var parsed = JsonConvert.DeserializeObject<Rootobject>(new WebClient().DownloadString(url));

HttpContent requestContent = Request.Content;
string jsonContent = requestContent.ReadAsStringAsync().Result;
MYOBJECT contact = JsonConvert.DeserializeObject<MYOBJECT>(jsonContent);