game-design-proposal-writer

game-design-proposal-writer is a skill for Codex from DY-2026/GameDesignOS. It costs 163 tokens per session (5,405 once invoked), scanned A, original, MIT.

A game-design document writer that turns research, game ideas, player goals, testing plans, diagrams, and production limits into proposals, design documents, or funding pitches.

In plain words
What is it for?
Use it for commercial game proposals, indie game design documents, GDDs, vertical-slice plans, Steam or publisher pitches, and reviews of existing plans.
Why use it?
It helps turn scattered design material into a reviewable plan with clear trade-offs, risks, milestones, and decisions. It also shows when an idea still needs research or validation.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it for commercial game proposals, indie game design documents, GDDs, vertical-slice plans, Steam or publisher pitches, and reviews of existing plans.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dy-2026/gamedesignos/game-design-proposal-writer
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 DY-2026/GameDesignOS --skill game-design-proposal-writer
Clone the repo
git clone --depth 1 https://github.com/DY-2026/GameDesignOS

Made for: Codex.

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-design-proposal-writer

README.md
[![agentmods](https://agentmods.dev/badge/skills/dy-2026/gamedesignos/game-design-proposal-writer/github.svg)](https://agentmods.dev/skills/dy-2026/gamedesignos/game-design-proposal-writer)
Your own site
<a href="https://agentmods.dev/skills/dy-2026/gamedesignos/game-design-proposal-writer"><img src="https://agentmods.dev/badge/skills/dy-2026/gamedesignos/game-design-proposal-writer/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.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/dy-2026/gamedesignos/game-design-proposal-writer"><img src="https://agentmods.dev/badge/skills/dy-2026/gamedesignos/game-design-proposal-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 163 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,405 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00163 $0.05405
Opus 5 $0.00081 $0.02703
Sonnet 5 $0.00033 $0.01081
Haiku 4.5 $0.00016 $0.00541

Measured 11d ago against content hash 9ac38dbce3b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

game-design-proposal-writer 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 11d 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.

game-design-proposal-writer/SKILL.md · 337 lines

How it starts

The opening of the file, as written. The whole thing — 337 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Game Design Proposal Writer

使用本 skill 时,把已经存在的调研材料、创意方案、玩家承诺、竞品证据、体验诊断、ED 实验、生产约束和商业目标,整理成可以被制作人、老板、发行、投资人、合作方或独立团队成员评审的游戏策划案/独游设计案。

它不是普通 GDD 生成器,也不是把一句话创意扩写成长文的工具。创意还没有被拆出 design nucleus 时,优先提醒使用 game-concept-architect;样本体验还没有证据层时,优先提醒使用 game-experience-analyzer;需要一周体验实验时,优先提醒使用 game-experience-density-optimizer。本 skill 的核心工作是把上游产物变成一份有受众、有论证、有取舍、有风险、有下一步决策的文档。

如果用户给的是一句话创意,但明确要求“写策划案/立项案/独游设计案/pitch/GDD”,不要直接跳过上游。先调用 game-concept-architect 产出 concept brief、player-promise-contract、core loop、scope gate 和 validation plan,再用本 skill 成案。最终文档要标注“上游概念由本轮自动生成,证据等级仍为 assumption / needs_research”。

用户可在自己的环境中处理真实项目、私有项目或客户项目。准备公开仓库案例时,只能使用 synthetic、公开或明确授权的材料,并在发布前执行 Human Gate。

什么时候使用

当用户想写、改写、压缩或评审以下材料时,使用本 skill:

  • 商业游戏策划案、立项案、产品方案、项目建议书。
  • 独立游戏设计案、GDD、Steam/发行 pitch、Demo/Vertical Slice 方案。
  • 给老板、制作人、发行、投资人、合作方或团队看的项目说明。
  • 把调研报告、创意方案、竞品分析、玩家承诺和验证计划整合成一份文档。
  • 把一句话创意先经 game-concept-architect 拆成概念契约,再整理成正式策划案。
  • 把玩法脑图、系统设计脑图、xmind、OPML、Markdown 大纲、Word/Excel 导出的设计表,整理成可落地策划案。
  • 审核、重写、压缩或改进已有商业策划案、独游设计案、GDD、pitch outline、vertical slice 文档。
  • 把过长、幻想化、没有决策点的设计案改成可评审版本。
  • 需要说明平台、商业模式、目标用户、核心循环、系统范围、制作成本、里程碑和风险。

以下请求要强触发:

  • 写一份商业游戏策划案
  • 写一份独游设计案
  • 写 GDD / Game Design Document
  • 写立项案 / 项目方案 / 产品方案 / pitch deck 文案
  • 给发行 / 投资人 / 老板看的游戏方案
  • 把这个创意整理成正式策划案
  • 只有一句话创意,帮我写成策划案 / 立项案 / pitch
  • 这个 xmind / 脑图 / 系统图帮我做成可落地策划案
  • 审核这份策划案 / 改进这份 GDD / 帮我把已有方案改成能评审的版本
  • 把调研和创意合成一份文档
  • 改成能立项评审的版本
  • 做 vertical slice 文档 / demo 方案

不适用场景

如果用户只有一句话创意,并且目标是判断创意是否成立,应优先使用 game-concept-architect。如果用户同时要求产出策划案,本 skill 应作为第二步,在 game-concept-architect 输出后接续成案。

如果用户给的是录屏、PV、截图或试玩反馈,并希望诊断体验问题,应优先使用 game-experience-analyzer

如果用户要的是首局节奏、反馈、具身感、氛围、认知负荷、留存或一周 A/B 实验,应优先使用 game-experience-density-optimizer

如果用户只是要宣传文案、商店页短描述、众筹页面、PR 文案或广告脚本,本 skill 可以给文档中的定位和承诺,但不应替代专门的 marketing copywriting。

项目内上游产物审核门

写案前先做一次项目内协作自检,但不要把本 skill 退化成泛品类设计回答。本 skill 只负责把项目内其他 skill 或用户已有材料收束成评审文档,不继承项目外的全局设计总师口径。

  • primary_category:先判断主品类/副品类、平台、商业模型和项目阶段。
  • core_player_action:先看玩家反复做什么,再看题材、系统和文案。
  • anti_pollution:商业案、独游案、Steam pitch、手游立项、Demo 文档不要互相套模板。
  • proof_of_play:对外 pitch 必须说明 playable build、gameplay video、demo、vertical slice、玩家反馈或指标的状态。
  • scope_feasibility:所有系统、内容、预算和里程碑都必须受团队能力约束。
  • negative_example:至少写一个看似相似但不应采用/不应投递的反例。

Read the full file on GitHub · 337 lines

Files

What ships with it

29 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.

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. 11d ago First seen · 337 lines · 163 tokens per session scan A 9ac38dbce3b3

Subscribe to this mod's changes

game-design-proposal-writer is a skill published in the GitHub repository DY-2026/GameDesignOS (385 stars, last pushed 25d ago), licensed MIT. It adds 163 tokens to every session and 5,405 once invoked, about $0.0008 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.

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