GitHub - RukkaNova/aevum-realm-architect: Rise from serf to sovereign in a deterministic kingdom-builder AI RPG for ChatGPT, Claude, or Gemini. · GitHub
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RukkaNova
aevum-realm-architect
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Aevum Realm Architect
Rise from serf to sovereign in a deterministic kingdom-builder that runs on ChatGPT, Claude, or Gemini.
Aevum Realm Architect is a free, two-file LLM RPG built by Arcanum RPGs. You start as a serf with one copper piece and climb — through trade, war, diplomacy, and intrigue — to the throne of a realm. Every outcome is deterministic: your preparation and planning decide battles, not dice. A tag-based economy tracks your domain, your forces, and your treasury turn by turn.
The world runs on a nearly 30,000-word Atlas covering five historically-inspired nations, named trade routes, seasonal economics, and a rigid social hierarchy enforced by the Deference Engine — the mechanic that makes your rise from serf to monarch feel genuinely earned.
★ 4.9/5 — read the full review
What's in this repo
File<br>What it's for
aevum-master-prompt.txt<br>The game engine — rules, hidden state tracking, agency protocols. Paste this into your model's instructions field.
aevum-realm-atlas.docx<br>The world encyclopedia — geography, economics, factions, law. Upload this as a knowledge file.
Quick setup
Create a Custom GPT (ChatGPT), a Project (Claude), or a Gem (Gemini).
Paste aevum-master-prompt.txt into the instructions field.
Upload aevum-realm-atlas.docx as a knowledge file.
Start playing.
Full step-by-step instructions for all three platforms — plus what to do if the game starts drifting — are in the install guide.
Highlights
The Deference Engine — a strict, enforced medieval social hierarchy. Speaking above your station as a serf has real, punitive consequences.
A tag-based economy — your domain, treasury, and forces are legible, plannable, and driven by specific tags you build or remove.
A world that moves without you — factions advance their own goals every turn, whether you're watching or not.
Deterministic combat — no dice. Battles resolve from your Retinue Power, your plan's quality, and a results table.
Five nations, five starting paths — feudal Al'thoria, Viking-inspired Njordheim, samurai Sakura, the desert trade empire of Al-Jamil, and the crumbling Shattered Republic.
About Arcanum
Arcanum RPGs is an independent directory and review site for AI-run text RPGs, and the Arcanum Originals are our own engineered games. Every Original is free to play — we design them, you play them on the AI you already use.
Full review & design notes
Design essay: the Deference Engine
All Arcanum Originals
The full AI RPG directory
Rights
This repo has no open-source license. It's public so you can read, download, and play the game for free — that's the whole point — but no license is granted to redistribute, resell, or publish modified copies. If you want to build on top of this system, get in touch.
About
Rise from serf to sovereign in a deterministic kingdom-builder AI RPG for ChatGPT, Claude, or Gemini.
arcanumrpgs.com/blog/aevum-realm-architect
Topics
gemini
claude
prompt-engineering
chatgpt
ai-rpg
kingdom-builder
llm-roleplay
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