OpenCode Game Studios

⚡ Evolved from Claude Code Game Studios (CCGS) — now a standalone framework supporting both OpenCode and Pi coding agents.

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📑 Table of Contents

• 💡 Motivation
• 📊 Port Status
• 🚀 Quick Start
• 🔌 Recommended Plugins
• 🗺️ Key Mappings
• 🧠 Model Mapping
• 🎯 Model Assignment Strategy
• 🔄 Customizing Models
• 📁 Directory Tree
• 🔗 Hooks Plugin
• 🏗️ Studio Hierarchy
• 🐛 Known Issues
• 📄 License

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💡 Motivation

Game development is a multi-disciplinary process — design, writing, architecture, programming, art, audio, QA, release — that's hard to coordinate with AI assistants in ad-hoc chat sessions. OpenCode Game Studios provides a structured framework for the full game lifecycle:

• Pre-workflow exploration — Rapidly prototype 2-4 ideas with zero commitment before choosing a development workflow
• Design-first pipeline — Brainstorm → systems map → section-by-section GDDs → cross-GDD review, before any code is written
• Phase gates — Formal checkpoints between phases with PASS/CONCERNS/FAIL verdicts that prevent advancing with gaps
• Workflow selection — Choose Hybrid (lightweight discovery then production) or Full OCGS (process-heavy from day one), depending on team size and project maturity
• 51 coordinated agents — From creative director to engine specialists, each with defined responsibilities, delegation maps, and strict domain boundaries
• 54 slash commands — Route through the right skill every time, from /concept-brainstorm to /launch-checklist

This project evolved from CCGS and runs on OpenCode and Pi.

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⚠️ Active Development — This is a living framework. Things will break, change, and improve. Report bugs at github.com/striderZA/OpenCodeGameStudios/issues.

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📊 Port Status

Component	CCGS (Claude Code)	OpenCode	Pi	Status
🤖 Agents	49 agents (.claude/agents/)	51 agents (.agents/agents/)	51 agents (.agents/agents/)	✅
⌨️ Skills	72 skills (.claude/skills/)	77 skills (.agents/skills/)	77 skills (.agents/skills/)	✅ +5
⌨️ Commands	—	54 commands (.agents/commands/)	→ prompt templates	✅ New
🔗 Plugins	12 bash hooks (.claude/hooks/)	3 TS plugins (.opencode/plugins/)	7 Pi extensions (.pi/extensions/)	✅ 183 tests
📏 Rules	11 rule files (.claude/rules/)	11 rule files (.agents/rules/)	11 rule files (.agents/rules/)	✅
⚙️ Config	CLAUDE.md + .claude/settings.json	AGENTS.md + opencode.json	AGENTS.md + .pi/settings.json	✅

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🚀 Quick Start

OpenCode

opencode

Type / to browse all 77 skills and 54 commands, or /start for onboarding.

Pi

pi

All OCGS skills, commands, and agents load automatically through Pi extensions. See docs/pi-compatibility.md for setup details.

🎮 Demo Game

See OCGS-Pong — a complete Pong game built entirely with this toolchain. Demonstrates the full workflow from concept through implementation using OCGS agents and skills.

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🧩 Modular Framework

The framework is partitioned into 21 pluggable theme modules. Only install what you need for your project:

Module	Description
core	Framework skeleton — directors, onboarding, /start, /help (required)
art	Aseprite MCP, art bible, asset specs, art generation
design	Game mechanics, systems design, combat, balance, playtesting
architecture	Technical planning, ADRs, architecture review
stories	Epics, stories, dev workflow, code review
programming	Gameplay, AI, engine, network agents + coding rules
ui	UX design, UI programming, accessibility
audio	Audio direction, sound design
narrative	Story, world-building, dialogue
level-design	Level layout, encounter design
qa	Testing strategy, bug tracking, profiling, skill testing
release	Release management, sprints, changelogs, hotfixes
prototyping	Rapid prototyping, concept exploration
live-ops	Post-launch content, community management
localization	i18n, translation pipeline
engine-godot	Godot 4 specialists (GDScript, C#, shaders, GDExtension)
engine-unity	Unity specialists (DOTS, shaders, Addressables, UI) + unity-mcp
engine-unreal	Unreal Engine 5 specialists (GAS, Blueprint, replication, UMG)
engine-sfml3	SFML 3 specialist (Graphics, Audio, Network, Window, System)
engine-raylib	Raylib specialist (core, rlgl, raudio, raymath, raygui)
data	Data file conventions and validation

# Install modules
node .opencode/modules/install.mjs add core
node .opencode/modules/install.mjs add engine-godot art design qa

# List all available and installed modules
node .opencode/modules/install.mjs list

# See module details
node .opencode/modules/install.mjs info core

# Remove a module (preserves user-modified files)
node .opencode/modules/install.mjs remove art

Module sources live in .agents/modules/<name>/ and are copied into the framework directories on install. User-modified files are detected during removal and left in place.

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🔌 Recommended Plugins

These plugins enhance the OpenCode experience and are recommended for all game development sessions:

Plugin	Purpose
dynamic-context-purging	Dynamic context pruning — automatically manages context window size, indexes content for search, and prevents context overflow during long sessions
Superpowers	Enhanced skill library — provides structured workflows for brainstorming, test-driven development, writing plans, code review, and parallel agent dispatch

OpenCode: Add to your opencode.json:

{
  "plugin": [
    "./.opencode/plugins/ccgs-hooks.ts",
    "PLUGIN_NAME"
  ]
}

Pi: OCGS Pi extensions are bundled in .pi/extensions/ and auto-discovered on startup. See docs/pi-extensions.md for details.

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🗺️ Key Mappings

CCGS (Claude Code)	OpenCode	Pi
.claude/skills/*.md →	.agents/skills/*.md	.agents/skills/*.md
.claude/agents/*.md →	.agents/agents/*.md	.agents/agents/*.md
.claude/hooks/*.sh →	.opencode/plugins/ccgs-hooks.ts	.pi/extensions/
.claude/rules/*.md →	.agents/rules/*.md	.agents/rules/*.md
CLAUDE.md →	AGENTS.md	AGENTS.md
.claude/settings.json →	opencode.json	.pi/settings.json

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🧠 Model Mapping

CCGS	OpenCode
opus 🐙	kimi-k2.6
sonnet 🖋️	qwen3.6-plus
haiku 🍃	deepseek-v4-flash

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🎯 Model Assignment Strategy

Tier	Model	Agents	Rationale
Directors (Tier 1)	opencode-go/kimi-k2.6	3 (creative-director, technical-director, producer)	Heaviest model for strategic planning, architecture decisions, and cross-team coordination
Workhorses (Tier 2-3)	opencode-go/qwen3.6-plus	43 (all other agents)	Balanced model for day-to-day design, implementation, testing, and review tasks
Lightweight (Special)	opencode-go/deepseek-v4-flash	3 (community-manager, devops-engineer, sound-designer)	Fast, low-latency model for simple, repetitive, or always-running agents

Note: Subagents invoked via the task tool inherit the caller's model regardless of their frontmatter model: field. See Known Issues.

The default session model (set via opencode -m) should match the tier of work:

• opencode -m opencode-go/kimi-k2.6 — director-level sessions
• opencode -m opencode-go/qwen3.6-plus — general development sessions
• opencode -m opencode-go/deepseek-v4-flash — quick QA or maintenance sessions

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🔄 Customizing Models

OpenCode supports any model provider — switch the studio to your preferred models, including local ones, with a single command.

Quick switch

# Preview the change first
node utils/assign-models.js --dry-run --map '{
  "opencode-go/kimi-k2.6":         "anthropic/claude-opus-4",
  "opencode-go/qwen3.6-plus":      "openai/gpt-4o",
  "opencode-go/deepseek-v4-flash": "ollama/llama3.2"
}'

# Apply it
node utils/assign-models.js --map '{
  "opencode-go/kimi-k2.6":         "anthropic/claude-opus-4",
  "opencode-go/qwen3.6-plus":      "openai/gpt-4o",
  "opencode-go/deepseek-v4-flash": "ollama/llama3.2"
}'

Or save your mapping to a JSON file and refer to it:

node utils/assign-models.js --config my-models.json

Provider examples

Provider	Model ID Format	Example
OpenCode (default)	opencode-go/<model>	opencode-go/qwen3.6-plus
Anthropic Claude	anthropic/<model>	anthropic/claude-opus-4, anthropic/claude-sonnet-4
OpenAI	openai/<model>	openai/gpt-4o, openai/o3
Google Gemini	google/<model>	google/gemini-2.5-pro
Ollama (local)	ollama/<model>	ollama/llama3.2, ollama/mistral
OpenAI-compatible	<endpoint>/<model>	http://localhost:11434/v1/llama3.2

Tip: Run opencode models to list all models available through your configured providers. See the OpenCode provider docs for setup instructions.

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📁 Directory Tree

/
├── AGENTS.md                  📋 Project configuration
├── opencode.json              ⚙️ OpenCode config (permissions, plugins)
├── .pi/                       ⚙️ Pi config (extensions, settings)
├── .agents/                   📦 Canonical content (harness-agnostic)
│   ├── agents/                🤖 51 agent definitions
│   ├── skills/                🛠️ 77 skill workflows
│   ├── commands/              ⌨️ 54 slash commands
│   ├── rules/                 📏 11 coding standards
│   └── modules/               🧩 21 pluggable theme modules
│       ├── ...                21 modules total
├── .opencode/                 ⚙️ OpenCode-specific (plugins, config)
│   ├── commands/ → .agents/commands/ (symlink)
│   ├── agents/ → .agents/agents/     (symlink)
│   ├── skills/ → .agents/skills/     (symlink)
│   ├── rules/ → .agents/rules/       (symlink)
│   ├── plugins/
│   │   ├── ccgs-hooks.ts      🔗 Session lifecycle, validation
│   │   ├── drift-detector.ts  🔍 Template drift detection
│   │   ├── changelog-generator.ts 📝 Changelog generation
│   │   └── tests/             🧪 11 test suites (140 tests)
│   └── modules/
│       ├── install.mjs        CLI: add/remove/list modules
│       ├── installed.json     Module manifest
│       └── ...                21 module sources
├── design/                    🎨 Game design documents
├── .pi/                        ⚙️ Pi-specific extensions & settings
│   └── extensions/            🧩 Pi extensions (ocgs-core, delegation, question, etc.)
├── docs/
│   ├── CONTRIBUTING.md        📖 Framework contribution guide
│   ├── authoring-agents.md    🤖 Agent authoring guide
│   ├── authoring-skills.md    🛠️ Skill authoring guide
│   ├── pi-compatibility.md    🔧 Pi setup guide
│   ├── pi-extensions.md       🧩 Pi extension reference
│   ├── pi-workflow.md         🔄 Pi workflow differences
│   ├── framework/             🏛️ OCGS framework reference docs & templates
│   ├── architecture/          🏗️ ADRs
│   └── engine-reference/      📚 Engine API reference
├── tests/
│   ├── agents/                🔍 Agent framework validation
│   ├── workflow/              🔄 Workflow integrity (refs, paths, gates, invariants)
│   ├── [game-specific tests]
│   └── [spawned by test-setup]
├── production/                📊 Sprint plans, session logs
├── utils/                     🔧 Developer utilities
│   └── assign-models.js       🎯 Batch-model assignment tool
└── ...                        🎮 Game source & assets

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🔌 Plugin Architecture

The OCGS plugin system is documented in .opencode/plugins/README.md. Three TypeScript plugins implement the original 12 CCGS bash hooks plus extensions:

Plugin	Purpose
ccgs-hooks.ts	Session lifecycle, commit validation, asset checks, agent logging, gap detection
drift-detector.ts	Detects agent/skill/command template drift on session start and file writes
changelog-generator.ts	Generates CHANGELOG.md from conventional commits since last tag

Hooks Mapping

All 12 bash hooks from CCGS ported to ccgs-hooks.ts:

#	Bash Hook	🔌 OpenCode Event	🧪 Tests
1	session-start.sh	session.created	18
2	session-stop.sh	session.idle / server.instance.disposed	10
3	detect-gaps.sh	session.created	15
4	log-agent.sh	tool.execute.before (task)	5
5	log-agent-stop.sh	tool.execute.after (task)	4
6	validate-assets.sh	tool.execute.after	16
7	validate-commit.sh	tool.execute.before (git commit)	17
8	validate-push.sh	tool.execute.before (git push)	13
9	validate-skill-change.sh	tool.execute.after	12
10	pre-compact.sh	experimental.session.compacting	14
11	post-compact.sh	experimental.compaction.autocontinue	5
12	notify.sh	Utility (showNotification)	—

🧪 Run plugin test suite: node .opencode/plugins/tests/test-<name>.mjs 🧪 Run workflow integrity suite: node tests/workflow/run-all.mjs

Contributing to the Framework

See CONTRIBUTING.md for guides on adding agents, skills, commands, rules, and plugins.

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🏗️ Studio Hierarchy

🎬  creative-director    🔧  technical-director    🎯  producer
├── 🎨  art-director        ├── 💻  lead-programmer
├── 🎵  audio-director      ├── 🧪  qa-lead
├── 📖  narrative-director  ├── 📦  release-manager
├── 🎮  game-designer       └── 🌍  localization-lead
└── ... (49 agents total)

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🐛 Known Issues

Issue	Impact	Workaround
Subagent model resolution via task — Agent model: frontmatter fails with ProviderModelNotFoundError for models that work when used directly via opencode -m <model>. Subagents inherit the caller's model per OpenCode docs, so the frontmatter model may only apply when the agent runs as a primary session.	Agents using opencode-go/kimi-k2.6 and opencode-go/deepseek-v4-flash as subagents via task	Use opencode-go/qwen3.6-plus for subagent-heavy workflows, or start dedicated sessions with opencode -m <model> for director-level agents. Root cause being tracked upstream in OpenCode.

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📄 License

MIT — Free for any use.

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_{Built with ❤️ for AI-assisted game development
OpenCode Game Studios · CCGS Port
MIT License · Free for any use}

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