hi there, when i was learning Space Shooter tutorial, the script DescroyByContact.cs Instantiate (explosion, gameObject.transform.position, gameObject.transform.rotation); if (other.gameObject.tag == "Player") { Instantiate (playerExplosion, other.transform.position, other.transform.rotation); } this two Instantiate didn't work. Debug.Log(explosion) and playerExplosion are good what's wrong with it?