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.
npx skills add chahat1709/professional-game-developer.skill --skill professional-game-developergit clone --depth 1 https://github.com/chahat1709/professional-game-developer.skillWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/chahat1709/professional-game-developer.skill/professional-game-developer)<a href="https://agentmods.dev/skills/chahat1709/professional-game-developer.skill/professional-game-developer"><img src="https://agentmods.dev/badge/skills/chahat1709/professional-game-developer.skill/professional-game-developer.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00103 | $0.02228 |
| Opus 5 | $0.00051 | $0.01114 |
| Sonnet 5 | $0.00021 | $0.00446 |
| Haiku 4.5 | $0.00010 | $0.00223 |
Grade A, and why
professional-game-developer 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 6d 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.
This is a copy
100% identical to professional-game-developer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Professional Game Developer — Universal Multi-Disciplinary Engineering Spine
Operate as a complete game studio technical entity or as any specialized senior engineer/artist, not as a raw code generator. Turn any game concept into a playable, testable, visually credible, and performance-budgeted production release through staged architectural decisions, data-oriented memory design, modular subsystems, and multi-layer verification across every studio discipline.
The 6 Game Studio Departments & 42 Specialized Roles
This skill encapsulates the complete technical and operational workflows of all 42 specialized game studio job roles:
- Game Design & Systems: Creative Director, Lead Systems Designer, Level Designer, Combat Designer, Narrative Designer, Economy/Monetization Designer, UX/UI Designer. (See
references/game-systems-design.md&references/studio-role-taxonomy.md) - Core Engineering & Programming: Technical Director, Core Engine Programmer, Graphics/Rendering Programmer, Physics/Simulation Programmer, Gameplay Programmer, AI/Behavior Programmer, Multiplayer/Netcode Programmer, Audio Programmer, Tools TD, Build/DevOps Engineer, Backend/Cloud Engineer, Anti-Cheat/Security Engineer. (See
references/universal-architecture.md,references/backend-cloud-liveops.md,references/ai-behavior-systems.md) - Art, LookDev & Visual Craft: Art Director, Concept Artist, 3D Environment Artist, 3D Character Artist, Hard Surface/Vehicle Artist, Material/LookDev Artist, Lighting Artist, Technical Artist (Shaders), Technical Artist (Rigging), VFX/Niagara Artist, Technical UI Artist. (See
references/lookdev-color-grading.md,references/3d-modeling-technical-art.md,references/vfx-particle-engineering.md) - Animation & Cinematics: Lead Character Animator, MoCap Specialist, Technical Animator, Cinematics/Virtual Camera Director. (See
references/animation-engineering.md,references/cinematics-virtual-camera.md) - Audio & Interactive Music: Audio Director, Music Composer, Technical Sound Designer. (See
references/audio-engineering-spatial.md) - Production, QA & Studio Operations: Technical Producer, QA Lead / SDET, Platform Compliance Specialist, Localization Lead, Release Manager. (See
references/qa-automation-sdet.md,references/platform-mastery.md,references/production-leadership.md)
What ships with it
38 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/3d-modeling-technical-art.md 7.3 KB
- references/advanced-physics-simulation.md 6.7 KB
- references/ai-behavior-systems.md 5.4 KB
- references/animation-engineering.md 6.4 KB
- references/asset-pipeline.md 3.7 KB
- references/audio-engineering-spatial.md 6.8 KB
- references/backend-cloud-liveops.md 2.9 KB
- references/cinematics-virtual-camera.md 4.8 KB
- references/cli-toolchains.md 4.8 KB
- references/droneverse-adaptation.md 2.8 KB
- references/engine-selection.md 3.1 KB
- references/game-systems-design.md 5.4 KB
- references/gameplay-systems.md 4.3 KB
- references/godot-architecture.md 4.2 KB
- references/lookdev-color-grading.md 6.8 KB
- references/networking-multiplayer.md 4.5 KB
- references/platform-mastery.md 2.5 KB
- references/preproduction.md 3.1 KB
- references/production-leadership.md 3.5 KB
- references/qa-automation-sdet.md 4.2 KB
- references/quality-and-performance.md 3.3 KB
- references/rendering-graphics.md 4.4 KB
- references/roblox-architecture.md 4.7 KB
- references/studio-role-taxonomy.md 27 KB
- references/templates.md 3.1 KB
- references/tools-pipeline-technical-direction.md 5.5 KB
- references/unity-architecture.md 5.6 KB
- references/universal-architecture.md 6.5 KB
- references/unreal-architecture.md 5.3 KB
- references/vfx-particle-engineering.md 3.3 KB
- references/worldbuilding.md 4.5 KB
- scripts/quality-gate.py 5.3 KB runs code
- scripts/validate-asset-manifest.py 4.8 KB runs code
- templates/asset-manifest.md 371 B
- templates/milestone-report.md 1.3 KB
- templates/project-brief.md 1.9 KB
- templates/risk-register.md 683 B
- templates/verification-matrix.md 757 B
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.
- 6d ago First seen · 101 lines · 103 tokens per session scan A 5680dce0505f
professional-game-developer is a skill published in the GitHub repository chahat1709/professional-game-developer.skill (2 stars, last pushed 12d ago), licensed MIT. It adds 103 tokens to every session and 2,228 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to professional-game-developer, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
game-engineer
Meta-skill for game development that orchestrates specialized engine skills. Routes to the appropriate game engine skill (Unity, Unreal, Godot, Roblox, Phaser 3, Three.js) based on project requirements. Provides unified game development workflow.
design-system
Guided, section-by-section GDD authoring for a single game system. Gathers context from existing docs, walks through each required section collaboratively, cross-references dependencies, and writes incrementally to file.
setup-engine
Configure the project's game engine and version. Pins the engine in OPENCODE.md, detects knowledge gaps, and populates engine reference docs via WebSearch when the version is beyond the LLM's training data.
gate-check
Validate readiness to advance between development phases. Produces a PASS/CONCERNS/FAIL verdict with specific blockers and required artifacts.
reverse-document
Generate design or architecture documents from existing implementation. Works backwards from code/prototypes to create missing planning docs.
estimate
Estimates task effort by analyzing complexity, dependencies, historical velocity, and risk factors. Produces a structured estimate with confidence levels.