Microsoft.Xna.Framework Microsoft.Xna.Framework.Audio Microsoft.Xna.Framework.Content Microsoft.Xna.Framework.GamerServices Microsoft.Xna.Framework.Graphics Microsoft.Xna.Framework.Graphics.PackedVector Microsoft.Xna.Framework.Input Microsoft.Xna.Framework.Input.Touch Microsoft.Xna.Framework.Net Microsoft.Xna.Framework.Storage System System.Collections.Generic System.Collections.ObjectModel System.IO System.IO.IsolatedStorage System.Runtime.InteropServices System.Security