Super Tic-Tac-Toe for 2 players!

I made a game based on the age-old tic-tac-toe. I saw a youtube video explaining how you can play this super variant, and it inspired me to make this into a game. 

It is a simple game, but not as easy as you might expect.

To win a match, you have to win 3 out of 9 games of tic-tac-toe to form a row in a larger game of tic-tac-toe, which you play all at once.

The game is made to be played with 2 players on 1 system.

Please, let me know what you think of the game! Any feedback is good feedback.