Simple, but with issues – Tic Tac Toe Extra Review

First, it should have an option to just play again, instead of having to go back to the main menu every time. Second, have an option to be X or O and who goes first (and/or random). Third, it has a big problem - if IA places an O to block you, you can just put the X on top of it. Basically, you can put the X in ANY box, whether it's open or not!
Review by Twisted30 on Tic Tac Toe Extra.