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Custom Level Editor

Category: Content  ·  Sub-category: content-misc  ·  Last updated:
Use when a LittleJS game needs a level editor or editable levels — "add a level editor", "let me edit levels", "make a map editor", "build a custom editor for my game", "hook my game up to the editor", placing objects or painting tiles while the game runs, saving levels as files, or extending/forking the built-in editor. LittleJS ships a 2D tile and object editor and a 3D level editor in the debug build; make the game load its level from data and customize that editor through the levelEditor object (own object types, keys, buttons, tools, panel, overlays, save) instead of writing an editor from scratch.
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From the source SKILL.md

LittleJS (1.23+) has two level editors inside the debug build — a 2D one that paints tile layers and places objects in a Tiled map, and a 3D one that places, moves, rotates and scales objects, paints blocks and sculpts terrain. Both are a starting point, meant to be turned into the editor for one particular game. Do not write a level editor from scratch. Undo, autosave, selection, copy and paste, snapping, file save and a play/edit toggle are already there.

What this skill does

Custom Level Editor is a community-contributed Claude Code skill in the content-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/custom-level-editor/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when a LittleJS game needs a level editor or editable levels — "add a level editor", "let me edit levels", "make a map editor", "build a custom editor for my game", "hook my game up to the editor", placing objects or painting tiles while the game runs, saving levels as files, or extending/forking the built-in editor. LittleJS ships a 2D tile and object editor and a 3D level editor in the debug build; make the game load its level from data and customize that editor through the levelEditor object (own object types, keys, buttons, tools, panel, overlays, save) instead of writing an editor from scratch.

Who uses this skill

The Custom Level Editor Claude Code skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 213,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/custom-level-editor
curl -L https://claudskills.com/skills/custom-level-editor/SKILL.md \
  -o ~/.claude/skills/custom-level-editor/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/custom-level-editor/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/custom-level-editor/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\custom-level-editor\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Custom Level Editor Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/custom-level-editor/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Custom Level Editor skill do?
Use when a LittleJS game needs a level editor or editable levels — "add a level editor", "let me edit levels", "make a map editor", "build a custom editor for my game", "hook my game up to the editor", placing objects or painting tiles while the game runs, saving levels as files, or extending/forking the built-in editor. LittleJS ships a 2D tile and object editor and a 3D level editor in the debug build; make the game load its level from data and customize that editor through the levelEditor object (own object types, keys, buttons, tools, panel, overlays, save) instead of writing an editor from scratch.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Custom Level Editor skill?
Use Custom Level Editor when your Claude Code task falls under the Content category — specifically in the content misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Custom Level Editor" or describe the task and let Claude pick). Browse related skills at /category/content/.
What is a Claude Code skill and how does the Custom Level Editor skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Custom Level Editor is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
KilledByAPixel. (2026). Custom Level Editor [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/custom-level-editor/
BibTeX
@misc{custom-level-editor-2026,
  author    = {KilledByAPixel},
  title     = {Custom Level Editor [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/custom-level-editor/}
}

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Grade A · scanned 2026-11-01 — free static scan against the OWASP Agentic Skills Top 10.

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