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 Stanestane/game-design-skills-bundle --skill game-design-one-thing-to-removegit clone --depth 1 https://github.com/Stanestane/game-design-skills-bundleWrote 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/stanestane/game-design-skills-bundle/game-design-one-thing-to-remove)<a href="https://agentmods.dev/skills/stanestane/game-design-skills-bundle/game-design-one-thing-to-remove"><img src="https://agentmods.dev/badge/skills/stanestane/game-design-skills-bundle/game-design-one-thing-to-remove/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/skills/stanestane/game-design-skills-bundle/game-design-one-thing-to-remove"><img src="https://agentmods.dev/badge/skills/stanestane/game-design-skills-bundle/game-design-one-thing-to-remove.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 | $0.00089 | $0.00894 |
| Opus 5 | $0.00044 | $0.00447 |
| Sonnet 5 | $0.00018 | $0.00179 |
| Haiku 4.5 | $0.00009 | $0.00089 |
Grade A, and why
game-design-one-thing-to-remove 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 12d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
2 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.
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.
- 12d ago First seen · 126 lines · 89 tokens per session scan A 53b2178e8c64
game-design-one-thing-to-remove is a skill published in the GitHub repository Stanestane/game-design-skills-bundle (61 stars, last pushed 22d ago), with no licence file. It adds 89 tokens to every session and 894 once invoked, about $0.0004 per session on Opus 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 skills, from other repositories
ux-design
Guided, section-by-section UX spec authoring for a screen, flow, or HUD. Reads game concept, player journey, and relevant GDDs to provide context-aware design guidance. Produces ux-spec.md (per screen/flow) or hud-design.md using the studio templates.
ux-review
Validates a UX spec, HUD design, or interaction pattern library for completeness, accessibility compliance, GDD alignment, and implementation readiness. Produces APPROVED / NEEDS REVISION / MAJOR REVISION NEEDED verdict with specific gaps.
unity-shaders
Author materials and VFX with Shader Graph, HLSL and URP/HDRP custom passes. Use when authoring URP/HDRP shaders, Shader Graph, or visual effects.
game-ui
Design HUDs, menus and diegetic interfaces with controller navigation and readability at TV distance. Use when designing HUDs, inventory menus, or controller-first interfaces.
difficulty-and-balancing
Use when designing, tuning, or reviewing the difficulty or balance of any game system — encounter tuning, cost curves, dominant-strategy audits, dynamic difficulty adjustment (DDA), difficulty settings, and accessibility assists. Also use to diagnose "this is too hard/too easy", "everything feels overpowered", a…
onboarding-and-teaching
Use when designing, reviewing, or generating the introduction to ANY mechanic in ANY genre — the four-beat teaching pattern (introduce→test→combine→twist), show-don't-tell level design, progressive disclosure and scaffolding, the mechanic dependency graph, FTUE (first-time user experience), early retention funnels…