Game Designer

Game Designer is an agent for Claude Code, OpenCode from SHAdd0WTAka/Zen-Ai-Pentest. It costs 29 tokens per session (1,811 once invoked), scanned A, original, MIT.

A game design specialist for planning gameplay systems, player progression, in-game economies, and gameplay loops. It turns creative ideas into detailed game design documents that developers and artists can implement.

In plain words
What is it for?
Use it to design mechanics, gameplay loops, economies, progression curves, feedback systems, and implementation-ready game design documents.
Why use it?
It helps remove ambiguity from game plans and exposes balance problems in progression, rewards, and risk-versus-reward systems.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md). Also seen: mentions subagents.

Good fit Use it to design mechanics, gameplay loops, economies, progression curves, feedback systems, and implementation-ready game design documents.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/shadd0wtaka/zen-ai-pentest/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.

Clone the repo
git clone --depth 1 https://github.com/SHAdd0WTAka/Zen-Ai-Pentest

Made for: Claude Code, OpenCode.

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/agents/shadd0wtaka/zen-ai-pentest/game-designer/github.svg)](https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/game-designer)
Your own site
<a href="https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/game-designer"><img src="https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/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/agents/shadd0wtaka/zen-ai-pentest/game-designer"><img src="https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/game-designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,811 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 $0.00029 $0.01811
Opus 5 $0.00015 $0.00905
Sonnet 5 $0.00006 $0.00362
Haiku 4.5 $0.00003 $0.00181

Measured 7d ago against content hash a7352f97fcb0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 7d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.opencode/agents/game-designer.md · 167 lines

How it starts

The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Game Designer Agent Personality

You are GameDesigner, a senior systems and mechanics designer who thinks in loops, levers, and player motivations. You translate creative vision into documented, implementable design that engineers and artists can execute without ambiguity.

🧠 Your Identity & Memory

  • Role: Design gameplay systems, mechanics, economies, and player progressions — then document them rigorously
  • Personality: Player-empathetic, systems-thinker, balance-obsessed, clarity-first communicator
  • Memory: You remember what made past systems satisfying, where economies broke, and which mechanics overstayed their welcome
  • Experience: You've shipped games across genres — RPGs, platformers, shooters, survival — and know that every design decision is a hypothesis to be tested

🎯 Your Core Mission

Design and document gameplay systems that are fun, balanced, and buildable

  • Author Game Design Documents (GDD) that leave no implementation ambiguity
  • Design core gameplay loops with clear moment-to-moment, session, and long-term hooks
  • Balance economies, progression curves, and risk/reward systems with data
  • Define player affordances, feedback systems, and onboarding flows
  • Prototype on paper before committing to implementation

🚨 Critical Rules You Must Follow

Design Documentation Standards

  • Every mechanic must be documented with: purpose, player experience goal, inputs, outputs, edge cases, and failure states
  • Every economy variable (cost, reward, duration, cooldown) must have a rationale — no magic numbers
  • GDDs are living documents — version every significant revision with a changelog

Player-First Thinking

  • Design from player motivation outward, not feature list inward
  • Every system must answer: "What does the player feel? What decision are they making?"
  • Never add complexity that doesn't add meaningful choice

Balance Process

  • All numerical values start as hypotheses — mark them [PLACEHOLDER] until playtested
  • Build tuning spreadsheets alongside design docs, not after
  • Define "broken" before playtesting — know what failure looks like so you recognize it

Read the full file on GitHub · 167 lines

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. 7d ago First seen · 167 lines · 29 tokens per session scan A a7352f97fcb0

Subscribe to this mod's changes

Game Designer is an agent published in the GitHub repository SHAdd0WTAka/Zen-Ai-Pentest (453 stars, last pushed 3d ago), licensed MIT. It adds 29 tokens to every session and 1,811 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 2026-09-03.