Now we must build a class to process the word list asset. This involves a class that can open and read the word list itself, select a word at random from the list, and compare two words for a match. The latter is needed to compare the typed word with the selected word from the dictionary. To start with, a new Singleton class  WordList.cs should be created. The basic skeleton follows:

using UnityEngine; 
using System.Collections; 
using System.Collections.Generic; 
//------------------------------------ 
public class WordList : MonoBehaviour 
{ 
   //------------------------------------ 
   //Members for Singleton 
   public static WordList ThisInstance 
   { 
         get 
         { 
               //Get or create singleton...