How to Add a Tic-Tac-Toe Game to Your Website

You can add a full, playable Tic-Tac-Toe game to any website, blog, or classroom page with a single line of code — free, with no sign-up, no plugin, and no script to install. Visitors play against a real AI opponent, and — unlike most tic-tac-toe embeds — this one ships with a provably unbeatable minimax engine they can test themselves. This guide covers the fastest way to embed the Unbeatable Tic-Tac-Toe AI, what makes it different, and where it works.

The quickest way: paste one embed snippet

An embed is just an <iframe> that loads the game from lkforge.com, plus a small credit line. Copy this into your page’s HTML where you want the game to appear:

<iframe src="https://lkforge.com/embed/tictactoe/"
        width="100%" height="680" loading="lazy"
        style="border:0;max-width:460px"
        title="Unbeatable Tic-Tac-Toe AI by LK Forge"></iframe>
<p><a href="https://lkforge.com/games/tictactoe/">Unbeatable Tic-Tac-Toe AI</a>
   by <a href="https://lkforge.com/">LK Forge</a></p>

The <iframe> is the live game; the <p> underneath is a plain credit link. Keep that line — the visible link is what keeps the widget free to embed. You can also copy this exact code straight from the “Add This Tic-Tac-Toe AI to Your Website” section on the game page.

What makes this Tic-Tac-Toe different: a provably unbeatable AI

Most tic-tac-toe embeds ship a weak or random opponent. This one uses a real adversarial-search engine, which makes it a teaching tool as much as a game:

• Minimax + alpha-beta pruning — on 3×3 the Hard AI searches the complete game tree, so it is mathematically unbeatable: the best any player can force is a draw.
• Scales to bigger boards — from 4×4 up to 10×10 the search depth is capped, so a skilled player can set up a fork the AI can’t see far enough ahead to stop. Three difficulty levels (Easy, Medium, Hard) suit any audience.

That makes the embed a good fit for a puzzle blog, a computer-science or maths lesson on game-tree search, or any page where you want a game that also demonstrates how an AI decides. The engine is open source with a reproducible benchmark at github.com/lucian-devops/tictactoe-ai.

Where it works

Because it is a standard iframe, the embed works anywhere you can add HTML:

• WordPress: add a Custom HTML block and paste the snippet.
• Squarespace: use a Code / Embed block.
• Wix: add an Embed HTML / iframe element.
• Ghost: insert an HTML card.
• Notion: paste the /embed/tictactoe/ URL and choose "Create embed".
• Plain HTML, an intranet, or a lesson page: paste the snippet straight into the markup.

The board is responsive — it fills the width you give the iframe up to a comfortable maximum — and cells are tap-friendly, so it is at home on phones as much as on desktop.

That’s the whole job. Copy the embed code from the Unbeatable Tic-Tac-Toe AI page and paste it wherever a puzzle blog, a games page, or a classroom activity needs an instant, self-contained game with a real AI opponent.