I finished the Bulls and Cows game and I decided to do what Ben suggested. which was add a choice to choose word length. At the start users can say whether they want to choose their own word length, or whether they want the program to choose the length for them (using TMap). Also, I decided to add word randomization. I have a list of random words and at the start of the game it chooses one of the words so the game has some replay value.