[ 01 ] mvp · world model
sketch ⟶ vision pass ⟶ marble world ⟶ explorable in your browser
Sketch a world.
Step inside it.
Draw something rough on a canvas. We feed it through a real world-generation model. You walk around the result. No prompt box, no demo content, no fake worlds — just your drawing and what the model makes of it.
Start drawingno account · no prompt input
01
Doodle
Pen, eraser, brush size. Works on mouse and touch. Anything from a treehouse to a derelict moon base — the rougher the better.
02
Generate
One button. Server runs the sketch through a vision pass and ships a concise world description to Marble. You don't see the prompt, you don't edit the prompt.
03
Step inside
A real generated world rendered in your browser. Drag to look around. Open the full splat experience in Marble for the high-fidelity walk.