1. Tic-Tac-Toe Game Engine

2. Basic Structure
Initialize the Game World While the game is not over Play Game Ending Activities

3. Initialize the Game World
Create game world data structures and initialize
Create array for board
Initialize array for board
Create and initialize variables for current player, current move, game status, current status statement
Draw game world

4. Basic Structure 2
Create game world data structures and initialize Draw game world While the game is not over Play Game Ending Activities

5. Play Game
Get Player Input Validate Player Input Update Game World Check for End of Game Update Current Player Draw Game World

6. Basic Structure 3
Create game world data structures and initialize Draw game world While the game is not over Get Player Input Validate Player Input Update Game World Check for End of Game Update Current Player Draw Game World Ending Activities

7. Ending Activities Declare state of game
Win/Lose/Tie
Ask if the users want to play again

8. Basic Structure 4
Create game world data structures and initialize Draw game world While the game is not over Get Player Input Validate Player Input Update Game World Check for End of Game Update Current Player Draw Game World Declare state of game Ask if the users want to play again