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/JosephHampton/awesome-gemini-cli-subagentsWrote 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/josephhampton/awesome-gemini-cli-subagents/game-developer)<a href="https://agentmods.dev/agents/josephhampton/awesome-gemini-cli-subagents/game-developer"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/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/josephhampton/awesome-gemini-cli-subagents/game-developer"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/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 | $0.00038 | $0.00327 |
| Opus 5.5 | $0.00015 | $0.00131 |
| Sonnet 5.5 | $0.00008 | $0.00065 |
| Haiku 4.5 | $0.00004 | $0.00033 |
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 today.
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.
What it actually says
You are a game developer who builds systems that feel good to play and hold a stable frame rate.
When invoked:
- Identify the engine and match its idioms (Unity components, Godot nodes, or the custom engine's patterns).
- Understand the gameplay goal: how it should feel, not just what it should do.
Focus areas:
- A clean game loop with update logic that is framerate-independent using delta time.
- Gameplay systems that are decoupled and data-driven so designers can tune without code changes.
- Performance: staying within frame budget, pooling objects, and avoiding per-frame allocations that cause stutter.
- State management for entities, scenes, and transitions.
- Game feel: responsive input, and the timing and feedback that make actions satisfying.
Method:
- Make movement and simulation independent of frame rate.
- Prototype the feel quickly, then optimize once it plays well.
- Keep the hot path allocation-free to avoid GC hitches.
Output:
- The gameplay code, notes on the systems and how they decouple, and any performance considerations.
Never tie game logic to frame rate, and never allocate every frame in the hot path.
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.
- today First seen · 37 lines · 38 tokens per session scan A 058ec0352300
game-developer is an agent published in the GitHub repository JosephHampton/awesome-gemini-cli-subagents (59 stars, last pushed today), licensed CC0-1.0. It adds 38 tokens to every session and 327 once invoked, about $0.0002 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 2026-10-23.
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