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Agent skill

Build Isometric Arpg

by nirholas in nirholas/three.ws

Build or extend a playable isometric action RPG in Three.js, React, or similar web technology.

Apache-2.0Auto-check passedGame Development

Install Build Isometric Arpg

skills CLI
$ npx skills add nirholas/three.ws --skill build-isometric-arpg -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nirholas/three.ws build-isometric-arpg --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nirholas/three.ws.git skills-src && mkdir -p .claude/skills && cp -r skills-src/third_party/designcode-agent-skills/agent-skills/game-development/build-isometric-arpg .claude/skills/build-isometric-arpg && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
build-isometric-arpg
GitHub stars
228
Used in
1 other repo
Token cost
~587 tokens
SKILL.md length
275 words
Files
2
Skills in repo
92
Repo updated
First seen
Licence
Apache-2.0

At a glance

Build or extend a playable isometric action RPG in Three.js, React, or similar web technology.

  • Works in 3 steps: Inspect the current game entry point,… → Record the authoritative baseline before… → Define data-driven contracts for player…
  • Game-loop architecture
  • SKILL.md covers Establish the production…, Build in vertical slices, Maintain runtime boundaries and Validate before release
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Build Isometric Arpg is an agent skill from nirholas/three.ws. Build or extend a playable isometric action RPG in Three.js, React, or similar web technology. Use for game-loop architecture, camera and movement, zones, combat integration, content data, progression, saves, or production-ready vertical slices.

Its SKILL.md is about 590 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).

It sits in Game Development, covering 3D graphics and WebGL, Game design and Game development. It works with React and Three.js. The repository describes itself as: Open-source platform for 3D AI agents. Turn text or a photo into a rigged, animated GLB avatar, give it an LLM brain, memory and a wallet, and embed it anywhere with one web… The licence is Apache-2.0.

When your agent uses it

  • Game-loop architecture
  • Camera and movement
  • Combat integration
  • Production-ready vertical slices

Example prompts

  • “/build-isometric-arpg”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Inspect the current game entry point, scene loop, content model, controls, save model, and tests.
  2. Record the authoritative baseline before integrating dependent work. Preserve unmerged work and do not build from a stale branch.
  3. Define data-driven contracts for player classes, equipment, enemies, zones, encounters, quests, and review fixtures. Keep authored content…

What it can do on your machine

Read from SKILL.md and the folder at commit ec8d1d2. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Build Isometric Arpg loads about 587 tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 275 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
When it runs · the whole SKILL.md, loaded when a task matches
~587

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nirholas/three.ws at commit ec8d1d2, republished under its Apache-2.0 licence (© nirholas). 275 words, ~587 tokens.

Download SKILL.mdSave it as .claude/skills/build-isometric-arpg/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
build-isometric-arpg
description
Build or extend a playable isometric action RPG in Three.js, React, or similar web technology. Use for game-loop architecture, camera and movement, zones, combat integration, content data, progression, saves, or production-ready vertical slices.

Build Isometric ARPG

Build one coherent playable loop before expanding scope: title/menu, character choice, movement, one encounter, reward, progression, and continuation.

Establish the production contract

  1. Inspect the current game entry point, scene loop, content model, controls, save model, and tests.
  2. Record the authoritative baseline before integrating dependent work. Preserve unmerged work and do not build from a stale branch.
  3. Define data-driven contracts for player classes, equipment, enemies, zones, encounters, quests, and review fixtures. Keep authored content separate from runtime state.

Build in vertical slices

Deliver each slice with a playable route and deterministic test state. Prefer this order:

  1. Movement, camera, collision, target selection, and pause/restart.
  2. One combat verb plus contact, damage, posture, recovery, and death.
  3. One enemy with telegraph, decision loop, and counterplay.
  4. One reward and atomic inventory/progression update.
  5. One zone transition or objective completion.

Avoid adding a second system until the preceding slice has gameplay proof, automated coverage, and a stable save/load path.

Maintain runtime boundaries

  • Keep simulation state deterministic and serializable where possible.
  • Consume authoritative contact events; do not infer physics outcomes from visual state.
  • Centralize timing, damage, cooldown, and content values. Do not duplicate combat clocks across components.
  • Make equipment, pickups, save migration, and reset flows atomic and idempotent.
  • Provide review query parameters or fixtures for difficult states such as boss phase changes, empty inventory, interrupted actions, and save migrations.

Validate before release

Run focused unit tests, type/lint checks, production build, and a real playthrough in the repository-approved browser. Verify a fresh start, saved continuation, loss/retry, one complete objective, keyboard/mouse controls, and the intended mobile baseline. Report known baseline failures separately from new failures.

© nirholas, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in third_party/designcode-agent-skills/agent-skills/game-development/build-isometric-arpg of nirholas/three.ws.

  • SKILL.md
  • agents/openai.yaml

Open the folder on GitHubat commit ec8d1d2

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in nirholas/three.ws, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Build Isometric Arpg next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Build Isometric Arpg compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Build Isometric Arpg this skillnirholas/three.ws2281 repos~587Automated safety check: PassApache-2.0
Web CloneJane-xiaoer/claude-skill-web-clone1k1 repos~2.7kAutomated safety check: PassMIT
Threejs Gameplay Systemsvalkor-ai/loom1.2k1 repos~1.4kAutomated safety check: PassApache-2.0
Improve Threejsmillionco/react-doctor15k—~2.3kAutomated safety check: PassCustom licence
Threejs Gameplay Systemscorosolto/client257—~1.5kAutomated safety check: PassAGPL-3.0
Polycsslayoutit/polycss761—~2.4kAutomated safety check: PassMIT

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Works with

Categories

Questions about Build Isometric Arpg

What does Build Isometric Arpg do?

Build or extend a playable isometric action RPG in Three.js, React, or similar web technology. ws.js, React, or similar web technology.

When should I use Build Isometric Arpg?

Build Isometric Arpg fits situations like: game-loop architecture; camera and movement; combat integration; production-ready vertical slices.

How do I install Build Isometric Arpg in Claude Code?

Run `npx skills add nirholas/three.ws --skill build-isometric-arpg -a claude-code`. Or copy the skill folder (third_party/designcode-agent-skills/agent-skills/game-development/build-isometric-arpg in nirholas/three.ws) into .claude/skills/build-isometric-arpg in your project. Claude Code loads it when a task matches its description.

How do I install Build Isometric Arpg in Codex?

Run `npx skills add nirholas/three.ws --skill build-isometric-arpg -a codex`. Or copy the skill folder (third_party/designcode-agent-skills/agent-skills/game-development/build-isometric-arpg in nirholas/three.ws) into .agents/skills/build-isometric-arpg in your project. Codex loads it when a task matches its description.

Can I use Build Isometric Arpg in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nirholas/three.ws --skill build-isometric-arpg -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/build-isometric-arpg, .gemini/skills/build-isometric-arpg, .github/skills/build-isometric-arpg and .opencode/skills/build-isometric-arpg in your project.

What does Build Isometric Arpg need to run?

SKILL.md names no scripts, command-line tools or credentials: Build Isometric Arpg is instructions for the agent only.

Does Build Isometric Arpg access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Build Isometric Arpg safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Build Isometric Arpg use?

Build Isometric Arpg is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Build Isometric Arpg use?

About 587 tokens (SKILL.md is roughly 2.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Build Isometric Arpg?

Skills that share tags, products or a category with Build Isometric Arpg: Web Clone (Jane-xiaoer/claude-skill-web-clone, 1k stars), Threejs Gameplay Systems (valkor-ai/loom, 1.2k stars), Improve Threejs (millionco/react-doctor, 15k stars) and Threejs Gameplay Systems (corosolto/client, 257 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Build Isometric Arpg?

nirholas (a GitHub user) maintains it in nirholas/three.ws, which has 228 GitHub stars. The repository holds 92 skills in this directory. The repository was last updated on October 9, 2026.

Source: nirholas/three.ws on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.