The prompt is a text request for an object, character, or structure. The official page is explicit that clones do not use AI. They place, resize, move, and assemble parts through a structured building system. Wording still changes what you get, and it does not guarantee exact geometry.
What to type first
Start with one recognizable subject: house, tower, wall, bridge, ship, or a simple vehicle such as an ice cream truck. A documented ship prompt produced a small readable model. Small Thomas the tank engine produced wheels, a cab, and a faceplate, then finished under a banner that used that name.
Avoid a first prompt that mixes several characters, vehicles, and actions. Recorded sessions have accepted short ideas such as a jet, tanks, a ship, the Titanic, the Eiffel Tower, and the YouTube logo. Those are examples of what was attempted, not a recipe list.
How wording changes the result
| Wording | What play has shown | Practical choice |
|---|---|---|
| One clear noun | Reliable small models such as ship or ice cream truck | Best first build |
| small, large, or massive | Scale can jump far past what you expected | Add only after a plain noun works |
| A scene or matchup | Accepted in some sessions, harder to inspect | After you can read a simple build |
| A brand or a demand that it be drivable | Can fail before construction | Reword to a generic object |
A session that got a tiny Titanic tried adding massive. That is a real scale lever, and it can also create a project that crowds the server. See the prompt comparison.
When the prompt is refused
Models are pulled from an integrated Creator Store catalog. Over-specific or brand prompts can return no model. Documented attempts such as ferrari That's drivable and ferrari I can drive produced this notice:
Creator Store returned no models; but you've already reached the requested object, so try other subject terms.
Other recorded refusals, from play and not from a published banned-word list:
- A misspelled Lamborghini was not buildable until the player changed the idea.
- A long phrase about a huge flying truck-plane had to be shortened to
plane. - A go-cart request went through after it was reworded toward
a car. - A monkey prompt finished as something else. The clones interpret; they do not guarantee the subject.
There is no published character limit. If a phrase is refused, shorten it to one generic subject and submit again. A rejected prompt is not the same thing as a build that is still in Planning….
After it starts
Watch the first pieces. If the subject is wrong, let this job finish or free the crew, then send a shorter prompt. Stacking corrections while the first job is running hits the one-active-build rule in crew and queue.