Game Master BellTap a QR code. Ring a bell.

A board game cafe lets customers call a game master to their table by scanning a QR code and tapping a bell — no waving, no walking to the counter.

For players & cafe operators

What Game Master Bell is, why it exists, and what it does — no code knowledge required.

Product Overview

The stack, the architecture, the call path, and how to clone, install, and run every app.

Architecture

The interesting engineering trade-offs — why no Firebase, why a native Android receiver, why one monorepo.

Engineering Decisions

The monorepo layout, plus links to the live app, the source, and the internal PRDs and runbooks.

Repository Map