Ghelmyon

A deterministic, single-player simulation RPG.
Persistent world, system-driven mechanics.
AI narrates the outcome — it never decides the rules.

Introduction What this is and why it matters Mechanics Combat, skills, crafting, reputation Gameworld Towns, NPCs, factions, dungeons Wiki Full reference — items, creatures, spells
Play Ghelmyon Read the Intro
1434 Named NPCs
1079 Locations
13 Classes
289 Crafting Recipes
41 Skill Trees
333 Quests

Solo-developed. ~1.2M lines of Python. ~51,000 automated tests.
Built with local LLMs, deterministic systems, and an unreasonable attention to detail.