---
name: brainstorm
description: "Use when you need the /brainstorm or $brainstorm game-production workflow. Guided game concept ideation — from zero idea to a structured game concept document. Uses professional studio ideation techniques, player psychology frameworks, and structured creative exploration."
---

# Brainstorm

Run the Codex Game Studios brainstorm workflow.

Before acting, read `DETAILS.md` for the full workflow. Apply project guidance from `AGENTS.md` and use `../../standards/` for path-specific standards.

Director gates run through Codex subagent workflows using the bundled
project-scoped custom agents from `../../runtime/agents/`. In `full` review
mode, `$brainstorm` explicitly spawns Codex subagents for the director gates.
If the current project does not already have `.codex/agents/creative-director.toml`,
`.codex/agents/art-director.toml`, `.codex/agents/technical-director.toml`,
`.codex/agents/producer.toml`, or root `AGENTS.md`, run
`python3 scripts/install_codex_runtime.py <target-project>` from the plugin root
first.

Review mode follows Codex Game Studios gate settings: `full` runs the
`$brainstorm` director gates, `lean` skips ordinary per-skill gates, and `solo`
skips all director gates.

`$brainstorm` writes `design/gdd/game-concept.md`. It defines and records game
pillars inside that concept document; it does not create
`design/gdd/game-pillars.md` as a separate artifact.