A survival game for web and mobile with daily seeded runs and leaderboards. The server replays submitted runs to verify scores.
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I planned the game and directed AI-assisted coding and artwork creation through mobile store releases. I reviewed implementation decisions and generated code, investigated failures, and maintained automated tests and CI checks. I configured the Cloudflare and Railway infrastructure and managed deployments.
A leaderboard needs more than a score reported by the client. Shyftel records player inputs and upgrade choices so the server can replay a run using the matching simulation version. Separating the deterministic simulation from Three.js lets the same logic run without a browser.
Automated checks cover simulation boundaries, determinism, and server-side validation. GitHub Actions runs checks before release. Cloudflare hosts the web application; Railway hosts the Hono API and PostgreSQL database. Capacitor packages the game for iOS and Android.