Instantiate every few seconds.

Questions & Answers
1

I’m trying to make a gameObject appear in my scene every 2 seconds but it is appearing every frame.
How can I fix this problem?

             using UnityEngine;
             using System.Collections;

            public class UFOspawn : MonoBehaviour {
	
	public int ufoSpeed;
	public float Timer = 2;
	public GameObject ufo;
	GameObject ufoClone;

	void Start () 
	{

	}
	
	void Update () 
	{
		Timer -= 1 * Time.deltaTime;
		if (Timer <= 0);
		ufoClone = Instantiate (ufo,(new Vector3 ((Random.Range (-9, 9)), 5, 0)), transform.rotation )  as GameObject;
			Timer = 2;}
	}
}
2

You just have problems with brackets, also I have no idea why do you multiply deltaTime by 1, here replace your Update with that:

void Update()
{
    Timer -= Time.deltaTime;
    if (Timer <= 0f)
    {
        ufoClone = Instantiate(ufo, new Vector3(Random.Range(-9, 9), 5f, 0f), transform.rotation) as GameObject;
        Timer = 2f;
    }
}