public class WallGenerator : MonoBehaviour {

    public GameObject Canvas;
    public GameObject WallTop;
    public GameObject WallBot;
    public float position;
    public float between_wall;
    public float StartPostion;
    float Number_of_walls;

    // Мяу
    void Start () {
        Create (8);
    }

    public void Create (float Number_of_walls)
    {
        for (float i = 0; i < Number_of_walls; i++) {
            position = Random.Range (0, 5);
            GameObject Wall1;
            GameObject Wall2;
            Wall1 = Instantiate (WallTop, new Vector3 ((StartPostion - i * between_wall),WallTop.transform.position.y,0), Quaternion.identity);
            Wall1.GetComponent<RectTransform> ().sizeDelta = new Vector2 (100,100 + position * 32);
            Wall1.transform.SetParent(Canvas.transform);
            Wall1.SetActive (true);
            Debug.Log ("Wall 1 Создано: " + position );
            Wall2 = Instantiate (WallBot, new Vector3 ((StartPostion - i * between_wall),WallBot.transform.position.y,0), Quaternion.identity);
            Wall2.GetComponent<RectTransform> ().sizeDelta = new Vector2 (100,100 + ((4 - position)* 32));
            Wall2.transform.SetParent(Canvas.transform);
            Wall2.SetActive (true);
            Debug.Log ("Wall 2 Создано: " + position );
        }
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Move : MonoBehaviour {

    public float MS;
    public int Side;
    //Для указания стороны
    //1 = право
    //-1 = лево
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        transform.Translate (new Vector2 (Side, 0) * MS * Time.deltaTime);
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class RIP : MonoBehaviour {

    public float time;
    //Убиваем :с
    void Start () {
        Destroy (this.gameObject, time);
    }
}