A solo maker built a large board game app with Claude Code and Codex
Vorryn is a strategy board game inspired by Catan Cities & Knights. The goal was to see how quickly a fun game could be built with an AI opponent that was challenging but not unbeatable. The result is a working with settlements, cities, roads, knights, progress cards, longest-road rules, and berserkers, plus a score-based AI bot and a full SvelteKit web app.
The web app includes sign-in, saved games, real-time updates, and an admin panel. It was mostly working in under 3 weeks, then took several more weeks of refinement. The project is about 260,000 lines of code, 1,300 files, 5,500 tests, and more than 2,500 GitHub commits.
It was built mostly with Claude Code and partly with Codex, and Codex solved some problems quickly while Claude was stuck. The stack includes strict TypeScript, pnpm workspaces split into core, bot, and web packages, SvelteKit, Pixi.js, Postgres with Drizzle ORM, Auth.js v5, Vitest, and .
Key points
- The project was built mostly with Claude Code, with some help from Codex.
- Vorryn includes a , an AI opponent, saved games, real-time updates, sign-in, and an admin panel.
- The game was mostly working in less than 3 weeks, but refinement took several more weeks.
- The codebase is about 260,000 lines, 1,300 files, 5,500 tests, and 2,500-plus GitHub commits.
- Codex reportedly solved some problems quickly after Claude Code struggled with them.