Help.

using UnityEngine;
using System.Collections;

public class NumberWizard : MonoBehaviour {
    int max = 1001;
    int min = 1;
    int guess = 500;
    // Use this for initialization
    void Start () {
        StartGame ();
    }
    void StartGame() {
        int max = 1001;
        int min = 1;
        int guess = 500;
        print ("============");
        print ("Welcome to Number Wizard!");
        print ("Pick a number in your head, but don't tell me!");


        print ("Highest number that you can go for is, " + max);
        print ("Lowest number that you can go for is, " + min);

        print ("Is your number above or under " + guess + "?");
        print ("Press up arrow for Above, Down arrow for Under and return for equals.");
    }
    void NextGuess() {
        guess = (min + max) / 2;
        print ("Higher or lower than " + guess);
    }
    // Update is called once per frame
    void Update () {
        if (Input.GetKeyDown (KeyCode.UpArrow)) {
            // print ("Above 500!");
            min = guess;
            NextGuess ();
        } else if (Input.GetKeyDown (KeyCode.DownArrow)) {
            //print ("Under 500!");
            max = guess;
            NextGuess();
        } else if (Input.GetKeyDown (KeyCode.Return)){
            print ("I got it! You lost!");
            StartGame();
        }
    }
}