Test Bed

A text adventure engine with an LLM as its dungeon master.

Our one application where an LLM is a first-class component of the system, not just a tool the app calls: the narrator runs on three tiers — the Claude API, a local SLM via ollama, or deterministic rules and templates — so the game still runs if the model is unavailable. Game engine and server for text adventures playable via Claude Code, CLI, or web client. Three binaries: cryptd (server with the narrator and rules engine), crypt (player CLI with Bubble Tea TUI), and crypt-admin (graph-first scenario authoring).

• Three binaries — server (game engine), client (TUI), admin (scenario authoring)
• Three narrator tiers — Claude API, local SLM via ollama, deterministic rules and templates — consistent game logic even offline
• Graph-first scenario design — adventures are directed graphs with conditions and state
• Concurrent sessions — multiple players share one daemon
• Lux visualization — live game map and state display

Morse code training on iOS — a state machine specified in Z, written first.

An iOS app implementing the Koch method for Morse code, and a working demonstration of Z Spec on a state-machine domain. Training modes, session lifecycle, and scheduling were modelled as states and transitions in a formal Z specification, written first in Z Spec — the spec preceded the code.

• Koch method: characters introduced in order of recognizability
• Learn, Practice, Vocabulary, and QSO Training modes — QSO Training runs two-way AI conversations in Call CQ or Answer CQ
• Spaced repetition scheduling adapts to your accuracy
• Free, no ads, no tracking — all data stored locally
• Implementation driven by formal Z specification
• Band condition simulation (QRN, QSB, QRM) and VoiceOver accessibility
• Localized into English (US/UK), German, French, Spanish, and Italian