Arcosian — Development skill for Claude Code

Arcosian

[](https://github.com/samsamurai301/arcosian/actions/workflows/ci.yml) [](LICENSE)

A Claude Code plugin suite that gives Claude the working habits of a principal game developer and a full studio behind them: a deep game-dev codex, a shared ontology with JSON schemas, 24 specialist agents, nine multi-agent workflows, simulators and solvers, an asset and audio gateway with budgets and provenance, Godot and Unity mobile templates, language servers for GDScript and C#, and hooks that enforce a five-gate definition of done.

It is not an engine wrapper. The value is in five layers, and each one is built to stand on its own.

Why it is different

Typical "AI game dev" setup	Arcosian
Prompts and a few snippets	A codex of 38 skills with about 160 reference files, written as procedures, formulas, decision tables and worked examples
"Looks done"	Done means five gates (static, unit, playthrough, visual, perf) with evidence on disk, checked by hooks that block the stop
One generalist	A principal agent plus 23 specialists, each with a model tier matched to the work
Free-form assets	Style lock, per-project budget, provenance and licence records for every generated asset
Vague ideas	Concept tournaments, adversarial critics, a one-page design contract with kill criteria
Lock-in	Native Godot or Unity projects you own; no runtime dependency on the plugin
Auto-ship	Store submission is never automatic; a human approves style, fun and submission

Install

In a terminal, with [Claude Code](https://code.claude.com/docs/en/setup) installed:

claude plugin marketplace add samsamurai301/arcosian
claude plugin install arcosian@arcosian

Or inside a Claude Code session: `/plugin marketplace add samsamurai301/arcosian`, then `/plugin install arcosian@arcosian`.