ゲームでよく見るあれです。
using UnityEngine; using System.Collections; public class ParticleCamera : MonoBehaviour { public GameObject particle; // Use this for initialization void Start () { } // Update is called once per frame void Update () { if (Input.GetMouseButtonDown(0)) { Vector3 clickPosition; clickPosition = Input.mousePosition; clickPosition.z = 10f; Instantiate(particle, Camera.main.ScreenToWorldPoint(clickPosition), Quaternion.identity); } } }