public async void OnGameOver()
{
refreshButton.Visibility = ViewStates.Invisible;
undoButton.Visibility = ViewStates.Invisible;
await Task.Delay(400);
frame.Visibility = ViewStates.Invisible;
gameOverFrame.Visibility = ViewStates.Visible;
await gameOverFrame
.CreateAnimator <LandingAnimator>()
.SetDuration(500)
.Animate();
winTextAnimator = winText
.CreateAnimator <PulseAnimator>()
.SetMax(1.4f)
.Start();
}