NumberWizard.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class NumberWizard : MonoBehaviour 
{
    int max;
    int min;
    int guess;
    void Start ()
    {
        StartGame();
	}
	
    void StartGame()
    {
        max = 1000;
        min = 1;
        guess = 500;

        Debug.Log("Welcome to my world...");
        Debug.Log("Pick a number, don't tell me what it is...");
        Debug.Log("The highest number you can pick is: " + max);
        Debug.Log("The lowest number you can pick is: " + min);
        Debug.Log("Tell me if your number is higher or lower than: " + guess);
        Debug.Log("Push Up = Higher, Push Down = Lower, Push Enter = Correct");
        max = max + 1;
    }
	void Update ()
    {
        if (Input.GetKeyDown(KeyCode.UpArrow))
        {
            min = guess;
            NextGuess();
        }
        else if (Input.GetKeyDown(KeyCode.DownArrow))
        {
            max = guess;
            NextGuess();
        }
        else if (Input.GetKeyDown(KeyCode.Return))
        {
            Debug.Log("I am a genius!");
            StartGame();
        }
    }
    void NextGuess()
    {
        guess = (max + min) / 2;
        Debug.Log("Is it higher or lower than..." + guess);
    }
}