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Gomoku
Five in a row. Classic strategy at its finest. Place black stones and outsmart Bella's random placement, challenge Coop's tactical thinking, then face Bentley's pattern-recognition mastery. Ancient game, modern AI. Can you achieve five in a row before the legendary champion blocks you?
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
- November 28, 2025
- Last rebuilt
- February 1, 2026
- Built with
- Claude Code in November 2025, rebuilt with Claude Opus 4.5 in February 2026
- Latest change
- The Feb 2026 rebuild added 108 unit tests and an interactive tutorial.
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
- 15x15 board with classic Gomoku rules
- Character-driven victory messages and personalities
- Smooth stone placement animations
- Winning line highlighting
- Detailed stats to track victories and moves
- Challenge friends to beat specific opponents
