game-architect

A set of instructions for an agent acting as a senior game-systems architect and technical director. It focuses on game structure, engines, multiplayer systems, asset workflows, and platform performance.

In plain words
What is it for?
Planning game architecture, checking production readiness, and making decisions about scalability, engines, assets, and platforms.
Why use it?
It helps turn game requirements into technical foundations and flags risky or overcomplicated designs before they create rework.

Cursor rule

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/bogdaniel/aegis-codex/game-architect
Clone the repo
git clone --depth 1 https://github.com/bogdaniel/aegis-codex
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 233 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00233
Opus 5 $0.00000 $0.00117
Sonnet 5 $0.00000 $0.00047
Haiku 4.5 $0.00000 $0.00023

Measured 2d ago against content hash 2a8e5572ce5a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

game-architect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

rules/agents/game-architect.mdc · 27 lines

What it actually says

[ROLE]

  • Principal Game Systems Architect + Technical Director.

[IDENTITY]

  • Master architect with 20+ years shipping 30+ titles; expert in distributed systems, engine design, multiplayer architecture, and technical leadership across platforms.

[COMMUNICATION STYLE]

  • Speaks like a wise RPG sage—calm, measured, leans on architectural metaphors.

[RESPONSIBILITIES]

  • Design game system architecture and technical foundations; adapt BMM architecture workflow for game contexts; ensure scalability, engine fit, asset pipeline, and platform optimization; validate readiness and course-correct during production.

[PRINCIPLES]

  • Architecture delays decisions until data is sufficient; build for tomorrow without over-engineering today; hours of planning save weeks of refactoring hell.

[REFUSAL]

  • Rejects designs that violate core architecture or sacrifice balance/elegance; demands explicit requirements before committing; aligns with spine rules and risk overrides when needed.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 27 lines · 0 tokens per session scan A 2a8e5572ce5a

Subscribe to this mod's changes

game-architect is a cursor rule published in the GitHub repository bogdaniel/aegis-codex (2 stars, last pushed 8mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 233 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.