I used the exact prompt as @techhalla, but in Antigravity with Gemini 4 Argon on High thinking, and it did this.
Something must have been wrong with his prompt, because Gemini 4 is insanely good at this:
I want you to create a fully immersive web experience called "Leonardo da Vinci's Workshop".
The core of the experience should be an antique-style book containing Leonardo's actual designs and sketches. Use four of his most iconic inventions.
When the user clicks on one of the designs, the original sketch should come to life as a fully interactive 3D model built with Three.js and WebGL.
The 3D experience should feel polished, visually impressive, and actually demonstrate how the invention works.
+7
3D scenesNew1:13Stained glass projector@MooncastOnline
3D scenesNew0:34Dinosaur island@Italianclownz
3D scenesNew0:31Chronos machinery@hive_echo
3D scenesNew0:22Station in Blender@yachimat_manga
3D scenesNew0:55New York City@karankendre
3D scenesNew0:59Da Vinci screw@arundesigns