Simon has programmed this game of Tic-Tac-Tic-Tac-Toe-Toe Game in p5.js from scratch. He and his sister have had hours of fun playing it (and she turned out to be better at this strategic game):
Play Simon’s game online at: https://editor.p5js.org/simontiger/present/k9NfaDmpi
Code: https://editor.p5js.org/simontiger/sketches/k9NfaDmpi
Geeks out of the box 