game-designer

game-designer is a skill for Claude Code from poorvith-mp/skills-gamedev. It costs 21 tokens per session (66 once invoked), scanned A, original, MIT.

A game-systems design guide for defining mechanics, gameplay loops, economies, progression, player feedback, and onboarding in a game design document. A gameplay loop is the repeating set of actions and rewards that makes up play.

In plain words
What is it for?
Use it to design or balance mechanics and economies, write game design documents, define progression, and plan onboarding flows.
Why use it?
It helps turn ideas into clear specifications that developers can implement without guessing. It also provides a way to reason about balance, player motivation, edge cases, and failure states.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the skills-gamedev plugin — 48 skills shipped together

Good fit Use it to design or balance mechanics and economies, write game design documents, define progression, and plan onboarding flows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/poorvith-mp/skills-gamedev/game-designer
Install

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.

Any agent
npx skills add poorvith-mp/skills-gamedev --skill game-designer
Clone the repo
git clone --depth 1 https://github.com/poorvith-mp/skills-gamedev

Made for: Claude Code.

Or install skills-gamedev, the plugin that ships this one along with the rest of its 48 skills.

Wrote 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.

agentmods badge for game-designer

README.md
[![agentmods](https://agentmods.dev/badge/skills/poorvith-mp/skills-gamedev/game-designer/github.svg)](https://agentmods.dev/skills/poorvith-mp/skills-gamedev/game-designer)
Your own site
<a href="https://agentmods.dev/skills/poorvith-mp/skills-gamedev/game-designer"><img src="https://agentmods.dev/badge/skills/poorvith-mp/skills-gamedev/game-designer/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.

agentmods 80×15 button for game-designer

Your own site · 80×15
<a href="https://agentmods.dev/skills/poorvith-mp/skills-gamedev/game-designer"><img src="https://agentmods.dev/badge/skills/poorvith-mp/skills-gamedev/game-designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 66 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00021 $0.00066
Opus 5 $0.00010 $0.00033
Sonnet 5 $0.00004 $0.00013
Haiku 4.5 $0.00002 $0.00007

Measured 4d ago against content hash a6bfa309fe75, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

game-designer 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 4d 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.

skills/game-designer/SKILL.md · 9 lines

What it actually says

Deprecated: game-designer

This skill has moved to game-design in skills-gamedev as part of the Skillary v4 catalog modernization.

Files

What ships with it

1 file 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.

Changes

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.

  1. 4d ago Changed · -38 lines · -30 tokens per session a6bfa309fe75
  2. 11d ago First seen · 47 lines · 51 tokens per session scan A c7e9ebd24a41

Subscribe to this mod's changes

game-designer is a skill published in the GitHub repository poorvith-mp/skills-gamedev (4 stars, last pushed 4d ago), licensed MIT. It adds 21 tokens to every session and 66 once invoked, about $0.0001 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 2026-08-31.

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