gistfile1.cs

public void InsertGames(params SteamGame[] game)
{
    var collection = GetGamesCollection();
    try
    {
        collection.InsertBatch(game, WriteConcern.Acknowledged);
    }
    catch (MongoCommandException ex)
    {
        var x = ex;
    }
}

public IEnumerable<SteamGame> RetrieveGames(params string[] appIds)
{
    var collection = GetGamesCollection();

    return collection.FindAs<SteamGame>(Query<SteamGame>.In(x => x.AppId, appIds.Select(x => new BsonString(x))));
}

private MongoCollection<SteamGame> GetGamesCollection()
{
    var client = (ConfigurationManager.AppSettings["onAzure"] == "true") ? new MongoClient(connectionString) : new MongoClient();

    var database = client.GetServer()[dbName];
    return database.GetCollection<SteamGame>(collectionName);
}