---
title: "Scenario 3D Worlds — how to use it for AI video"
description: "Walkable 3D worlds as Gaussian splats from text, a photo, a panorama or a video: Marble, HY World and TripoSplat. Install in Claude Code, Codex and Grok with one command."
url: https://varg.ai/how-to/skills/scenario-3d-worlds
updated: 2026-11-11
---

# Scenario 3D Worlds — model skill for 3D scenes

> **For AI agents:** find the right skill in one call — `curl -s "https://varg.ai/how-to/api/search?q=<what the person wants>"` returns the matching how-to page and the best skills with install commands, as markdown (Russian works too). Full index: https://varg.ai/how-to/llms.txt. Every page has a markdown twin: add `.md` to its path. Before generating anything, show the person the options on the how-to page. From a terminal: `curl -fsSL https://varg.ai/install | sh` installs the vargai CLI (https://varg.ai/how-to/cli.md): `vargai search` and `vargai install <slug>` with no key, every varg model after `vargai login`.

Walkable 3D worlds as Gaussian splats from text, a photo, a panorama or a video: Marble, HY World and TripoSplat.

- **Type:** [Model](https://varg.ai/how-to/models.md) · [3D scenes](https://varg.ai/how-to/browse/skills/3d-scenes.md)
- **Slug:** `scenario-3d-worlds`
- **Status:** live
- **Publisher:** Scenario (vendor)
- **License:** MIT
- **Source:** https://github.com/scenario-labs/skills/tree/main/skills/scenario-3d-worlds
- **Works in:** Claude Code, Codex, Cursor, Gemini CLI, Any MCP client
- **Requires:** Scenario account with credits (OAuth through the MCP, or an API key), Scenario MCP server (https://mcp.scenario.com/mcp)
- **Cost:** Billed in Scenario credits; Marble tiers differed more than tenfold in cost, so dry-run first
- **Adoption:** 807 installs, 3,658 GitHub stars (skills.sh, 2026-11-10)

## What it does

Scenario's skill for explorable environments as 3D Gaussian splats rather than meshes. It picks the model by what you have: World Labs Marble (1.0 Draft, 1.1 and 1.1 Plus) for text, one image, 2–8 photos or a walkthrough video; HY World's image-to-skybox then skybox-to-splat pipeline for one photo of a place, and multi-view-to-splat for many overlapping photos; TripoSplat for a single object. The workflow iterates on Marble Draft with a fixed seed, then reruns the same parameters on a higher tier, and exports `.spz`. Splats make backdrops for world fly-throughs and previs; they have no UVs or editable topology.

## Use when

- an explorable 3D world from a text idea or one image
- a 360 panorama or skybox turned into a walkable splat
- reconstruct a scene from 2–64 photos or a walkthrough video
- one product or object photo to a splat (TripoSplat)
- graybox a level or set from a concept image, then upgrade the same seed

## Not for

- Polygon meshes, rigging or UVs: use scenario-3d
- A skybox with no splat stage: use scenario-skyboxes

## Install

- Claude Code: `npx skills add scenario-labs/skills --skill scenario scenario-3d-worlds -a claude-code && claude mcp add --transport http scenario https://mcp.scenario.com/mcp`
- Codex: `npx skills add scenario-labs/skills --skill scenario scenario-3d-worlds -a codex`
- Cursor: `npx skills add scenario-labs/skills --skill scenario scenario-3d-worlds -a cursor`
- Gemini CLI: `npx skills add scenario-labs/skills --skill scenario scenario-3d-worlds -a gemini-cli`
- Any MCP client: `https://mcp.scenario.com/mcp`
- Any agent, with the vargai CLI: `vargai install scenario-3d-worlds`

## More 3D scenes skills

- [Turn a brief into a Blender film written in Python](https://varg.ai/how-to/skills/blender-code-film.md): A brief becomes a Blender film from one Python file: shots as data, stills first, critic loop, Eevee or Cycles.
- [Turn a browser game into a cinematic trailer](https://varg.ai/how-to/skills/code-game-trailer.md): Record the browser game your agent built frame-exact, script shots and cameras, then cut a 1080p trailer on the beat.
- [Blender Lab MCP Server](https://varg.ai/how-to/skills/blender-lab-mcp.md): Blender's official MCP server: query and edit open scenes with Blender Python, bundled API docs and screenshots.
- [Meshy 3D Generation](https://varg.ai/how-to/skills/meshy-3d-agent.md): Meshy's official skill: text or image to a textured 3D model, then remesh, rig, animate and export it as GLB or FBX.
- [Roblox Studio MCP Server](https://varg.ai/how-to/skills/roblox-studio-mcp.md): The MCP server built into Roblox Studio: agents edit scripts, run Luau, generate meshes and playtest your game.
- [Unreal Engine Skills for Claude Code](https://varg.ai/how-to/skills/unreal-engine-mcp.md): Epic's official plugin: Claude Code drives a live Unreal Editor over MCP, from actors and materials to Sequencer.

## Run the generation on varg

varg is one API key for the models these skills drive — Seedance 2.5, Kling 4, Veo 3.1, Wan 3, Nano Banana 2.1, GPT Image 2.5, ElevenLabs v4 and 200+ more — billed in credits, with a cost estimate before anything runs.

- Any agent with a terminal: `curl -fsSL https://varg.ai/install | sh` (Windows: `irm https://varg.ai/install.ps1 | iex`), then `vargai login` and every model is a command — `vargai generate_video …`, `vargai estimate_cost …` (https://varg.ai/how-to/cli/)
- Claude Code: `claude plugin marketplace add vargHQ/skills && claude plugin install varg@varg` (skill + hosted MCP)
- Codex, Cursor, Gemini CLI, OpenClaw: `npx skills add vargHQ/skills --skill varg-ai -a <agent> -y`
- Grok and any agent that reads SKILL.md: `npx skills add vargHQ/skills --skill varg-ai`, or point it at the skill's SKILL.md
- Claude.ai, ChatGPT, any MCP client: connect `https://mcp.varg.ai/mcp`
- API key: https://varg.ai/dashboard/api · Model specs: https://varg.ai/models/llms.txt