How to change the response.redirect URL value?

How to change the response.redirect URL value?

I send value to another page by response.redirect the URL have the value
and it is very too long :
=">http://x.elarabygroup.com/SiteLogin.aspx?token=CAACgVEYG6y4BAPpCA576tZCOVTaiStohQHcFMj8TnkYDiIBWnuQjoMSRMSjmTlZCK0JhdyWP8MYiFQELLGUMht07vKZCVLaxz7gBASydeG5PqBB9dypqvEh7tyTR1nZCRvZBITNEcnkDj00pFxNGKfi9v8U5UkVAjQlLuY08aVANUgZC9dZAi852216uCsTgpcZD#=
I want to hide or display another url as http://x.elarabygroup.com/playgame/
Response.Redirect("http://x.elarabygroup.com/SiteLogin.aspx?token=" +
respnse);