MonoBehaviour.OnMouseDown()

Description

OnMouseDown is called when the user has pressed the mouse button while over the Collider.

This event is sent to all scripts of the GameObject with Collider or GUIElement. Scripts of the parent or child objects do not receive this event.

using UnityEngine;
using System.Collections;
using UnityEngine.SceneManagement;

public class ExampleClass : MonoBehaviour
{
    void OnMouseDown()
    {
        // Destroy the gameObject after clicking on it
        Destroy(gameObject);
    }
}

This function is not called on objects that belong to Ignore Raycast layer.

This function is called on Colliders marked as Trigger if and only if Physics.queriesHitTriggers is true.

OnMouseDown can be a coroutine.