перестали работать скрипты

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

public class Gamehelper : MonoBehaviour {

    public GameObject Ground;
    public int Width = 100;
    public int Height = 100;

    // Use this for initialization
    void Start()
    {

        for (int x = -10; x < Width; x++)
        {
            for (int y = -10; y < Height; y++)
            {
                GameObject ground = Instantiate(Ground, new Vector2(x, y), Quaternion.identity) as GameObject;
            }
        }

    }

    // Update is called once per frame
    void Update () {
		
	}
}