Getting 'cannot find symbol' error on 'Game'. [SOLVED]

public class Hangman {

    public static void main(String[] args) {
        // Enter amazing code here:
        Game game = new Game("treehouse");
        Prompter prompter = new Prompter(game);
        boolean isHit = prompter.promptForGuess();
        if (isHit) {
          System.out.println("We got a hit!");
        } else {
          System.out.println("Whoops, that was a miss");
        }     
    }
} 

public class Game {
  private String mAnswer;
  private String mHits;
  private String mMisses;

  public Game(String answer) {
    mAnswer = answer;
    mHits = "";
    mMisses = "";
  }

  public boolean applyGuess(char letter) {
    boolean isHit = mAnswer.indexOf(letter) >= 0;
    if (isHit) {
      mHits += letter;
    } else {
      mMisses += letter;
    }
    return isHit;
  }

}

import java.io.Console;

public class Prompter {
  private Game mGame;

  public Prompter(Game game) {
    mGame = game;
  }

  public boolean promptForGuess() {
    Console console = System.console(); 
    String guessAsString = console.readLine("Enter a letter:  ");
    char guess = guessAsString.charAt(0);
    return mGame.applyGuess(guess);                                              
  }
}

public class Game {
  private String mAnswer;
  private String mHits;
  private String mMisses;

  public Game(String answer) {
    mAnswer = answer;
    mHits = "";
    mMisses = "";
  }

  public boolean applyGuess(char letter) {
    boolean isHit = mAnswer.indexOf(letter) >= 0;
    if (isHit) {
      mHits += letter;
    } else {
      mMisses += letter;
    }
    return isHit;
  }

}

Hangman.java:5: error: cannot find symbol                                                                                                                   
        Game game = new Game("treehouse");                                                                                                                  
                        ^                                                                                                                                   
  symbol:   class Game                                                                                                                                      
  location: class Hangman                                                                                                                                   
./Prompter.java:4: error: cannot find symbol                                                                                                                
  private Game mGame;                                                                                                                                       
          ^                                                                                                                                                 
  symbol:   class Game                                                                                                                                      
  location: class Prompter                                                                                                                                  
./Prompter.java:6: error: cannot find symbol                                                                                                                
  public Prompter(Game game) {                                                                                                                              
                  ^                                                                                                                                         
  symbol:   class Game                                                                                                                                      
  location: class Prompter                                                                                                                                  
4 errors