A 3D Rube Goldberg machine
Author’s claim. Posted before Fable 5.2 came out. The author called it Fable 5.5, the name rumors gave the next Fable. We can’t verify which model ran.
A one-minute video of an elaborate 3D Rube Goldberg chain reaction. The author says one short prompt asked for accurate physics and AAA-grade visuals, followed by a request for the video.
One email a week: the best new Fable 5.2 works
Picked from what creators posted that week, each one credited and linked to the original post.
One email a week: the best new Fable 5.2 works
Our note
A night-time 3D chain reaction titled "Rube Goldberg Machine", subtitled "13 stages · One take · Real physics". A glowing ball sits atop a blue wire track, followed by labelled stages: a "Domino Run" curving across a wooden table, teal "Giant Slabs" toppling toward a gold ball, a copper "Helix", "Xylophone Stairs" with rainbow keys, then a "Wrecking Ball" smashing a stack of bricks and stage 13, "Gong". A neon "Ta-da!" sign glows under fireworks, and the closing line says the physics engine and renderer were written from scratch with zero libraries. Those are the author's claims; the thread has the prompt, and we have not run it.
Written by The Frontier Brief after watching the video (Nov 5, 2026). It describes what is on screen; we have not run the work ourselves.
Prompt
The author shared the prompt in a reply on X. We have not copied it here; read it in the thread.
What we know
- Model
- Listed under Fable 5.2. The author wrote Claude Fable 5.5 (author’s claim)
- What we checked
- From the open awesome-fable5-5-videos list (MIT, Copyright (c) 2026 yihui-dev). On Oct 31, 2026 the post was still live on X; which model actually ran is the author’s claim.
Video from @imjustnewatai’s post on X, credited to the author. Want it taken down? Email support@fable5.app.
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