Sure! Here's a Tic Tac Toe game implemented as a single HTML file using JavaScript. The game is designed to be played on a smartphone and uses pictograms for the X and O symbols. The algorithm for the AI opponent ensures that it always picks the right move.
Tic Tac Toe
To play the game, simply copy and paste the code into a new HTML file and open it in a web browser on your smartphone. The game will automatically start, and you can take turns playing against the AI opponent. The AI opponent will always make the optimal move to ensure it never loses. Enjoy!