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Tic-tac-toe
The classic game of X's and O's, but with attitude. Start with Bella who might accidentally let you win, challenge Coop's balanced gameplay, then face Bentley who has literally never lost a game of Tic Tac Toe in his life. Simple rules, strategic depth, and three opponents who bring personality to every match.
Play
Three dogs, one engine at three depths. Your pick is remembered across the arcade.
How this game was built
Every game in the arcade is built from scratch by an AI coding agent as a test of what current models can ship.
- Framework
- React 19 + TypeScript + Vite
- First built
- January 16, 2026
- Last rebuilt
- February 2, 2026
- Built with
- Claude Opus 4.5
- Latest change
- The Feb 2026 rebuild added a 7-step interactive tutorial and undo functionality.
Want to build or change your own? The whole game is on GitHub. Fork it, run npm install and npm run dev, and the board is yours to change: the rules, the three opponents, the art, or the whole look.
- Three unique opponents with escalating difficulty
- Classic 3x3 grid gameplay
- Character-driven victory messages and personalities
- Smooth piece placement animations
- Winning line highlighting
- Detailed stats to track your victories
- Challenge friends to beat specific opponents
