1. Tic Tac Toe Prototype Following is a prototype of a Tic Tac Toe program. The main goal of the program is to provide quick and simple entertainment. It should also be usable by young children who are still learning the game, so it will give constructive feedback when the player is making an obvious mistake.

2. Tic Tac Toe Prototype First Story – The human player wins.

3. Tic Tac Toe Human’s Turn Click Here

4. Tic Tac Toe X Click to see Computer’s Move Click Here

5. Tic Tac Toe X Human’s Turn Click Here O

6. Tic Tac Toe X Click to see Computer’s Move Click Here O X

7. Tic Tac Toe X Human’s Turn Click Here O OX

8. Tic Tac Toe X Click to see Computer’s Move Click Here X O OX

9. Tic Tac Toe X Human’s Move Click Here X OO OX

10. Tic Tac Toe X Game Over Click to play again Click Here XX OO OX X Wins!

11. Tic Tac Toe Prototype Second Story Human loses

12. Tic Tac Toe Human’s Turn Click Here

13. Tic Tac Toe X Click to see Computer’s Move Click Here

14. Tic Tac Toe X Human’s Turn Click Here O

15. Tic Tac Toe X Click to see Computer’s Move Click Here O X

16. Tic Tac Toe X Human’s Turn Mistake O OX

17. Tic Tac Toe X Click to see Computer’s Move Click Here XO OX

18. Tic Tac Toe X Game Over Click to play again O XO OX Computer Win’s

19. Tic Tac Toe Prototype Third Story Computer warns human when they make a stupid move

20. Tic Tac Toe Human’s Turn Click Here

21. Tic Tac Toe X Click to see Computer’s Move Click Here

22. Tic Tac Toe X Human’s Turn Click Here O

23. Tic Tac Toe X Click to see Computer’s Move Click Here O X

24. Tic Tac Toe X Human’s Turn Mistake O OX

25. Tic Tac Toe X Click here to confirm your stupid move – otherwise click a different square – the green square is recommended. ?O OX

26. Tic Tac Toe X Game Over Click to play again O XO OX Computer Win’s

27. Tic Tac Toe Prototype Various examples

28. Tic Tac Toe X Human’s Turn O OX Cheater clicks here

29. Tic Tac Toe X Human’s Turn O OX You cannot play there – that square is already taken

30. Computer Moves First Tic Tac Toe Human Moves First Click Here to play O New Game

31. Tic Tac Toe X Human’s Turn

32. Tic Tac Toe X Cat’s game (draw) Click here to restart OX OOX OXX This game is a draw

33. Tic Tac Toe Prototype It is not necessary to show every possible user story. After you have shown a few, you can write the rest in text. For example: Sample Games Beginners want to see some sample games so they can learn more quickly. The program could have a database of sample games, and run in “Demo” mode to display them.

34. Tic Tac Toe Prototype 1.Human Player Wins 2.Computer Wins 3.Computer Warns About Stupid Move 4.Computer Rejects Cheater Moves 5.Human Chooses Playing X or O 6.Computer Stores and Displays Demo Games 7.Computer Recognizes a Drawn Game It is helpful to name the stories (scenarios). This prototype showed the following:

35. PowerPoint for Prototypes It is not a requirement to use PowerPoint for your prototype(s), but it has several advantages: 1.Puts the programmer in the right “mood” 2.Screen design is quick and easy 3.It keeps sample screens organized 4.Can easily copy and paste new screens 5.Gives the user a “feeling” for the features 6.You can easily save, modify, and print screens

36. Prototypes and Automation Don’t waste time trying to automate your prototype – the stories can be linear Keep notes about automation that will be required in your solution – for example: - Computer “knows” the rules - Computer can recognize a winning move - Computer recognizes game over, including a tie