scenario-unreal-world-building SKILL.md skillA
scenario-unreal-world-building from scenario-labs/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add scenario-labs/skills/scenario-unreal-world-building@git:20260926.9ac7861Pins git:20260926.9ac7861 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- scenario-labs/skills
- Path
skills/game-engines/unreal/scenario-unreal-world-building/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260926.9ac7861, committed Sep 26, 2026
- Size
- 19,118 bytes
- Repository stars
- 1,063
- License
- MIT
Use when building or fixing an Unreal Engine 5 level or open world: World Partition, OFPA, Data Layers, Level Instances, Packed Level Actors, HLOD, landscape size, heightmap import or clipping, edit layers, terrain material rules, foliage and grass, a PCG forest or rock scatter, runtime GPU grass, Nanite and tessellation choices, modular kits, a river or village, streaming pop-in, cells not loading, landscape black spots, "PCG shows nothing in the editor", or a world too heavy to hand to…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Unreal world building (levels, open worlds, landscape, PCG) Expert level here means a world sized by rule, placed by tier of importance, streamed and budgeted from the first map, and changed by script region by region, never by hand-selecting thousands of actors. The environment artist decides what stays manual, what is baked and what is generated at runtime, then proves every choice with a count, a trace or a screenshot. If a sibling skill named here is missing from your available skills, ask the user to install it (`npx skills add scenario-labs/skills --skill <name>`); unattended, proceed from tool schemas and flag the gap. **REQUIRED BACKGROUND:** scenario-unreal-expert (channels, review loop, 5.8 traps). Toolkit: [`scripts/ue_world.py`](scripts/ue_world.py) (`sys.path[:0] = ["<skills>/scenario-unreal-world-building/scripts", "<skills>/scenario-unreal-expert/scripts"]; import ue_world as W`) with `ue_run`, `ue_review`, `ue_audit`, `ue_stat`. **Not yet run in Unreal:** the offline layer passed `tests/code/unreal-world-building/test_world_offline.py`; [verify] names are resolved by `W.probe()`. A written plan names the engine call behind each `W.*` step (procedures P0 table). …
Read the whole file at its exact version.
How to install
mdr add scenario-labs/skills/scenario-unreal-world-building@sha256:9912233d18d3db6eThe line at the top of this page pins the label git:20260926.9ac7861, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3seismgzz4ceffhp)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 26, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (19118 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
scenario-labs/skills · 1,063 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3seismgzz4ceffhp GET https://markdownregistry.com/api/v1/resolve?ref=scenario-labs/skills/scenario-unreal-world-building GET https://markdownregistry.com/api/v1/blob/9912233d18d3db6e448e7e72c398bd99ddd09daa54454bc6ac5c76fc3d7d1d16
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.