// Play a sound if screen is facing downwards

function Update () {
if (Input.deviceOrientation == DeviceOrientation.FaceDown)
audio.Play();
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void Update() {
if (Input.deviceOrientation == DeviceOrientation.FaceDown)
audio.Play();

}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

def Update():
if Input.deviceOrientation == DeviceOrientation.FaceDown:
audio.Play()