# Colosseum built from 44,754 parts

> A 3D film that assembles the Colosseum tier by tier from 44,754 separate parts, from foundations to the velarium. The creator asked Fable 5.5 what it would make if it had spare time on a Friday, and this is what it chose.

- Kind: Video
- Page: https://meetreference.com/v/open-ended-3d-build-44-754-parts/
- Ready-to-use agent handoff: https://meetreference.com/v/open-ended-3d-build-44-754-parts/agent.txt
- Exact prompt as plain text: https://meetreference.com/v/open-ended-3d-build-44-754-parts/prompt.txt
- Authorship: AI-made, per the source
- Made with: Not stated
- Model: Claude Fable 5.5
- Built with: not stated
- Style: 3D & WebGL; 3d, colosseum, roman architecture, construction sequence, open-ended, museum
- Length and format: 1 min, 16:9 (1920x1080 source)
- Shared by Josh Madeiros in X, Oct 2, 2026: https://x.com/cocoloba_/status/2106029181607772413
- Prompt fidelity: Paraphrased. The creator described the prompt in their own words rather than publishing it.

## Before you start

Guidance from Reference, separate from the creator's instructions.

1. Read the reference and inspect the project, installed libraries, and available agent skills before writing code. Reuse suitable tools already present.
2. Prefer the creator-reported libraries and skills when they fit the task. Explain what useful additions help with, and install missing project dependencies or relevant skills from official sources when the environment and the user's existing permissions allow it. Respect the project's package manager and setup rules; do not ask again for routine setup already authorized.
3. Distinguish tools used by the creator from your own recommendations. A listed tool is not automatically required, and an empty tools or requirements list means the setup is unknown, not that nothing is needed.
4. Ask concise questions when missing inputs or choices materially affect the result: paid services, credentials, the user's assets, or a different production approach. Use existing answers and permissions; continue independent work while waiting.
5. If a useful library, skill, or service cannot be installed or used, explain an available alternative and its expected effect on quality, features, or effort. Get the user's choice before a material compromise; otherwise state the fallback and continue. Never silently simplify the result or claim to have used a tool you did not use.

## Recreating this video

These are the creator's published instructions, unedited.

To adapt it: Ask the same open question, "what it would make if it had spare time on a Friday", and add a medium, such as "in Three.js".

## Prompt

```text
what it would make if it had spare time on a Friday...
```

## What it looks like

Written by Reference from the video frames, not by the creator.

A warm, museum-like 3D build of the Colosseum: stone blocks fly in and settle tier by tier until the full amphitheatre stands, with a caption for each stage.

- Color: Travertine cream and sand, terracotta-red seating, gilded statues, and a dark brown backdrop.
- Type: A small serif title with a one-line description bottom left ("Foundations", "Ground storey: arches", "The velarium", "Amphitheatrum Flavium") and a running part count bottom right.
- Framing: 16:9 close and three-quarter views with shallow depth of field; blocks hang in the air above the structure as it builds, and the last frame pulls back to the whole building.
- Structure: Foundations, ground-storey arches, podium and first tier, second-storey vaults, third-storey piers and walls, statues in the arches, the top gallery, the velarium masts, and the finished Amphitheatrum Flavium.

Storyboard, nine frames spread across the video: https://meetreference.com/media/open-ended-3d-build-44-754-parts/storyboard.webp

- Frame 1 at 4.0s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f1.webp
- Frame 2 at 12.1s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f2.webp
- Frame 3 at 20.2s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f3.webp
- Frame 4 at 28.3s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f4.webp
- Frame 5 at 36.4s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f5.webp
- Frame 6 at 44.5s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f6.webp
- Frame 7 at 52.6s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f7.webp
- Frame 8 at 60.7s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f8.webp
- Frame 9 at 68.8s: https://meetreference.com/media/open-ended-3d-build-44-754-parts/f9.webp

## How it was made, per the creator

- Reported spend: "Less than my train ticket home", the creator says in a reply
- Notes: The creator reports the result used 44,754 separate 3D parts. No other process details are given.

> 44,754 separate 3D piece parts later
> (Josh Madeiros)

## Links

- Watch: https://x.com/cocoloba_/status/2106029181607772413
- Original post: https://x.com/cocoloba_/status/2106029181607772413