Tic-tac-toe (or “Noughts and Crosses”) is a game simple enough to implement in any computer system: indeed it’s often used in beginner’s programming courses. A more challenging project ...

If you Google for “tic-tac-toe” or “tic tac toe,” you’ll also see a playable game in a card in the search results. You can adjust the settings here to Easy, Medium or Impossible.