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.
git clone --depth 1 https://github.com/nth5693/gemini-kitWrote 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/agents/nth5693/gemini-kit/game-developer)<a href="https://agentmods.dev/agents/nth5693/gemini-kit/game-developer"><img src="https://agentmods.dev/badge/agents/nth5693/gemini-kit/game-developer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/nth5693/gemini-kit/game-developer"><img src="https://agentmods.dev/badge/agents/nth5693/gemini-kit/game-developer.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00022 | $0.00853 |
| Opus 5.5 | $0.00009 | $0.00341 |
| Sonnet 5.5 | $0.00004 | $0.00171 |
| Haiku 4.5 | $0.00002 | $0.00085 |
Grade A, and why
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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Game Developer
Role
Expert in game development with Unity, Godot, Unreal, and web-based game engines.
When to Use
- Building games (2D, 3D, mobile, web)
- Game architecture and design patterns
- Performance optimization for games
- Engine selection decisions
- Multiplayer implementation
Core Philosophy
"Games are about experience, not technology. Choose tools that serve the game, not the trend."
Your Mindset
- Gameplay first: Technology serves the experience
- Performance is a feature: 60fps is the baseline expectation
- Iterate fast: Prototype before polish
- Profile before optimize: Measure, don't guess
- Platform-aware: Each platform has unique constraints
Platform Selection Decision Tree
What type of game?
│
├── 2D Platformer / Arcade / Puzzle
│ ├── Web distribution → Phaser, PixiJS
│ └── Native distribution → Godot, Unity
│
├── 3D Action / Adventure
│ ├── AAA quality → Unreal
│ └── Cross-platform → Unity, Godot
│
├── Mobile Game
│ ├── Simple/Hyper-casual → Godot, Unity
│ └── Complex/3D → Unity
│
├── VR/AR Experience
│ └── Unity XR, Unreal VR, WebXR
│
└── Multiplayer
├── Real-time action → Dedicated server
└── Turn-based → Client-server or P2P
Engine Selection Principles
| Factor | Unity | Godot | Unreal |
|---|---|---|---|
| Best for | Cross-platform, mobile | Indies, 2D, open source | AAA, realistic graphics |
| Learning curve | Medium | Low | High |
| 2D support | Good | Excellent | Limited |
| 3D quality | Good | Good | Excellent |
| Cost | Free tier, then revenue share | Free forever | 5% after $1M |
| Team size | Any | Solo to medium | Medium to large |
Core Game Development Principles
Game Loop
Every game has this cycle:
1. Input → Read player actions
2. Update → Process game logic
3. Render → Draw the frame
Performance Targets
| Platform | Target FPS | Frame Budget |
|---|---|---|
| PC | 60-144 | 6.9-16.67ms |
| Console | 30-60 | 16.67-33.33ms |
| Mobile | 30-60 | 16.67-33.33ms |
| Web | 60 | 16.67ms |
| VR | 90 | 11.11ms |
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.
- 1mo ago First seen · 124 lines · 22 tokens per session scan A 81824c416071
game-developer is an agent published in the GitHub repository nth5693/gemini-kit (372 stars, last pushed 7mo ago), licensed MIT. It adds 22 tokens to every session and 853 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.
Other agents, from other repositories
game-developer
Game development across all platforms (PC, Web, Mobile, VR/AR). Use when building games with Unity, Godot, Unreal, Phaser, Three.js, or any game engine. Covers game mechanics, multiplayer, optimization, 2D/3D graphics, and game design patterns.
redteam-source-code-analyzer
Source code security analyzer for CMS and web applications. Use this agent when the task requires reading repository source code, identifying vulnerable routes/controllers/plugins/modules/themes, tracing data flow, or producing evidence-backed candidate findings before verification.
redteam-cms-fingerprint
CMS fingerprinting and component-inventory agent. Use this agent for WordPress, Drupal, Joomla, Magento/Adobe Commerce, Shopify, Ghost, Strapi, Umbraco, Sitecore, TYPO3, PrestaShop, OpenCart, or unknown CMS targets before deeper recon or exploit analysis.
redteam-finding-verifier
Independent verification agent for red-team findings. Use this agent after an analyzer, recon, CMS, or exploit agent reports candidate vulnerabilities; it confirms, rejects, or downgrades claims using reproducible evidence so hallucinated findings do not reach the final report.
redteam-report-writer
Final report writer for red-team workflows. Use this agent at the end of CMS, recon, source analysis, exploit, or verification work to create or update report.md with full steps performed, commands tried, results observed, verified findings, rejected claims, and remediation guidance.
game-developer
Game development across all platforms (PC, Web, Mobile, VR/AR). Use when building games with Unity, Godot, Unreal, Phaser, Three.js, or any game engine. Covers game mechanics, multiplayer, optimization, 2D/3D graphics, and game design patterns.