MengTo uses Fable 5.2 to make a trailer for his Three.js game
MengTo demonstrates a cinematic trailer for his Three.js game made with Fable 5.2. Camera shots needed little steering, while fixes and character animation required most of his intervention.

TL;DR
- MengTo used Fable 5.2 to turn his Three.js game into a 60-second trailer, as he demonstrated.
- Camera shots needed little steering; fixes and character animation took most of his intervention, he said in a reply.
- Direction came from targets and game references, with Dark Souls 3, Diablo and Baldur's Gate 3 among his examples.
Fable 5.2, released by Anthropic on November 9, takes text and images and outputs text. MengTo says the creative reference can be as lightweight as a tweet showing gameplay.
A 60-second Three.js trailer
MengTo's source material was his existing game in Three.js, the JavaScript 3D library.
MengTo's game trailer made with Fable 5.2
The camera work is the standout. MengTo said he did little steering, because the model tended to produce these shots itself.
Dark Souls, Diablo and Baldur's Gate
MengTo described his usual approach as giving the model a target and reference material. His examples were:
- Dark Souls 3
- Diablo
- Baldur's Gate 3
- A tweet containing gameplay
These were suggestions for setting direction, rather than a disclosed prompt for this particular trailer.
Character animation cleanup
Character animation was the weakest area, MengTo said when explaining where his intervention went. Alongside general fixes, the specific problems he named were:
- Walking
- Running
- Hands holding a sword at the right angle
- Body stretching
Unreal port
MengTo also said he was working on porting the project to Unreal.