Small

public class TransformMove : MonoBehaviour
{
    public GameObject obj;

    void Update()
    {


        if (Input.GetKey(KeyCode.UpArrow))
            obj.transform.Translate(Vector3.forward * moveSpeed * Time.deltaTime);

        if (Input.GetKey(KeyCode.DownArrow))
            obj.transform.Translate(-Vector3.forward * moveSpeed * Time.deltaTime);

        if (Input.GetKey(KeyCode.LeftArrow))
            obj.transform.Rotate(Vector3.up * -turnSpeed * Time.deltaTime);

        if (Input.GetKey(KeyCode.RightArrow))
            obj.transform.Rotate(Vector3.up * turnSpeed * Time.deltaTime);

        if (Input.GetKey(KeyCode.S))
            obj.transform.localScale = new Vector3(transform.localScale.x / 2, transform.localScale.y / 2, transform.localScale.z / 2);