What is generate2dmap?

A workflow for creating playable 2D game maps, such as RPG areas, tactical arenas, and side-scrolling levels. It covers the map's visuals, game objects, collision rules, and target engine or file format.

Use it to create or revise maps for engines and formats including Phaser, Tiled, LDtk, Godot, Unity, or a project's own system. It can plan tiles, layers, objects, collisions, and interactive areas.

It helps turn a map idea into the pieces a game can actually use, instead of producing only a picture. It also helps choose an appropriate structure when the user has not specified one.

generate2dmap — Skill for Claude Code and Codex by gabrielmoreira

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 gabrielmoreira/agent-skills-mirror --skill generate2dmap

Clone the repo

git clone --depth 1 https://github.com/gabrielmoreira/agent-skills-mirror

Made for: Claude Code, 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/generate2dmap/github.svg)](https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/generate2dmap)

Your own site

<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/generate2dmap"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/generate2dmap/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/generate2dmap"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/generate2dmap.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 211 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,959 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 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00211	$0.02959
Opus 5.5	$0.00084	$0.01184
Sonnet 5.5	$0.00042	$0.00592
Haiku 4.5	$0.00021	$0.00296

Measured 18d ago against content hash b1d0b1842a2d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

generate2dmap 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 18d ago.

The scan reads SKILL.md. This mod also ships 26 executable files (references/runtime/map-runtime.mjs, scripts/build_motion_mask.py, scripts/build_scene_preview.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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

This is a copy

100% identical to generate2dmap — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

mirrors/repos/0x0funky@agent-sprite-forge/skills/generate2dmap/SKILL.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Generate 2D Map

Build the smallest scene bundle the request needs, in the game's art, camera, renderer and data conventions. A background picture needs no game system; a playable map needs explicit geometry and data beyond a painting.

Use when

A playable map, level, room set, tilemap, terrain or prop kit, with collision and exits.
A parallax background, a battle, title or story backdrop, or an HD-2D plate with lights and motion.
Map data must be validated, previewed or exported to Tiled, Godot or LDtk.

Do not use when

Actors, items and attack FX: generate2dsprite. Character motion from video: video2dsprite.
Code-drawn tiles, layouts or parallax the user asked for: codeart2d. Only an API or CLI call: generate2dmedia.

Capability check (once per session)

Run python "<skill-dir>/../generate2dmedia/scripts/forge_doctor.py" --host-tools <tools> --save <output>/doctor.json, where <tools> lists the media tools in your own tool list (image_gen, image_edit, image_to_video) or none. Its ROUTES block shows which API keys are configured (yes or no), the local readiness and the resolved order. If encoding.stdout fails, set PYTHONUTF8=1.

Art source

Image generation is the default for map art: terrain and tile sheets, prop kits, HD-2D plates, painted backgrounds and parallax layers. Map data (layout, collision, exits, spawns) is data you write and validate, not art. Record each asset's art_source (api, host_image, existing, or code only on request) and name the route in your reply. A route the user names explicitly wins.

API, when a key is configured: OpenAI (OPENAI_API_KEY), Google Gemini (GEMINI_API_KEY), xAI (XAI_API_KEY), BytePlus Seedream (ARK_API_KEY) or fal.ai (FAL_KEY), in the environment or the user config file (route-media.md). The configured key is the owner's consent, so there is no per-call question.
Local: your own image tool (Codex image_gen, Grok's native tool) when you have one, otherwise the user's signed-in Codex CLI, then Grok CLI.
codeart2d (autotiles, layouts, stylized parallax, ambient loops) only when the user explicitly asks for code-drawn art, or when route_media.py prints no-route (exit 3). Then say "code-drawn, no image model".

Read the full file on GitHub · 95 lines

Files

What ships with it

40 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.

18d ago Changed · -365 lines · +103 tokens per session b1d0b1842a2d
1mo ago First seen · 460 lines · 108 tokens per session scan A a691fd9ec000

Subscribe to this mod's changes

generate2dmap is a skill published in the GitHub repository gabrielmoreira/agent-skills-mirror (19 stars, last pushed yesterday), licensed MIT. It adds 211 tokens to every session and 2,959 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to generate2dmap, differing in 0 lines, and is treated as a copy.

Game development

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Structured playtest report template, or turn existing playtest notes into structured feedback.

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generate2dmap