Very VERY small sample, can not show much as per my NDA agreement. I personaly wrote about half of this.

private void Pause()
{
paused = !paused;
if (paused)
{
MakingMarsEngine.GUI.Control.HilightColor = Color.Orange;
EngineComponent.Storage.Load("PauseMenu");
sounds.RadioMusic.Pause();
rover.PauseRover(true);
pauseMenuControl = new MakingMarsEngine.GUI.ControlCollection(EngineComponent.Storage.GetValueAsString("Layout"), EngineComponent.Storage.GetValueAsString("Values"));

((Sliderbar)pauseMenuControl["pBMGSOUND"]).Move((float)Math.Round((CurrentDBProfile.DBPatient.BGMVolume * 100 - ((Sliderbar)pauseMenuControl["pBMGSOUND"]).Value) / 5, 0));
((Sliderbar)pauseMenuControl["pEFXSOUND"]).Move((float)Math.Round((CurrentDBProfile.DBPatient.SFXVolume * 100 - ((Sliderbar)pauseMenuControl["pEFXSOUND"]).Value) / 5, 0));

(pauseMenuControl["pBMGSOUND"] as MakingMarsEngine.GUI.Sliderbar).OnSliderChanged += playBGMSoundOnSlide;
(pauseMenuControl["pEFXSOUND"] as MakingMarsEngine.GUI.Sliderbar).OnSliderChanged += playSFXSoundOnSlide;
(pauseMenuControl["pBMGSOUND"] as MakingMarsEngine.GUI.Sliderbar).OnSliderChanged += delegate(float val) { rover._BMGSOUND = (pauseMenuControl["pBMGSOUND"] as MakingMarsEngine.GUI.Sliderbar).Value / 100; rover.SetVolume(); };
(pauseMenuControl["pEFXSOUND"] as MakingMarsEngine.GUI.Sliderbar).OnSliderChanged += delegate(float val) { rover._EFXSOUND = (pauseMenuControl["pEFXSOUND"] as MakingMarsEngine.GUI.Sliderbar).Value / 100; };
(pauseMenuControl["Resume"] as MakingMarsEngine.GUI.Button).OnUse += new Action(Pause);
(pauseMenuControl["Exit"] as MakingMarsEngine.GUI.Button).OnUse += delegate()
{
EngineComponent.Input.ResetButtons();
EngineComponent.Input.ResetKeys();
ParentGame.RunSubgame(typeof(MakingMars.MainMenu));
};
pauseMenuControl.setLayer(1f);
EngineComponent.Manager3D.Enabled = false;
Hud.Enabled = false;
pauseBackground.Visible = true;
rover.StopEngine();
if(dust != null)
dust.Visible = false;
GamePad.SetVibration(PlayerIndex.One, 0f, 0f);
if (OnPause != null)
OnPause();
}
else
{
rover._BMGSOUND = CurrentDBProfile.DBPatient.BGMVolume;
rover._EFXSOUND = CurrentDBProfile.DBPatient.SFXVolume;
sounds.RadioMusic.Resume();
rover.PauseRover(false);
pauseMenuControl.Dispose();
EngineComponent.Input.GetKey(Keys.Left).ResetEvents();
EngineComponent.Input.GetKey(Keys.Right).ResetEvents();
Hud.Enabled = true;
EngineComponent.Manager3D.Enabled = true;
pauseBackground.Visible = false;
MMDatabase.SaveChanges();
if (dust != null)
dust.Visible = true;
rover.PlayEngine();
MakingMarsEngine.GUI.Control.HilightColor = Color.Cyan;
if (OnUnpause != null)
OnUnpause();
}
}