ButtoonsController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ButtonsController : MonoBehaviour
{
    private void OnMouseDown()
    {
        if (gameObject.name == "button-exit")
        {
            Application.Quit();
        }
        if (gameObject.name == "button-new")
        {
            GameStorage.timer = 60f;
            GameStorage.score = 0;
            GameStorage.isPlay = true;
        }
    }
}