Isle Lab: a relaxing 3D terrain builder in the browser

I’m building Isle Lab — a relaxing, painterly 3D terrain builder that runs directly in the browser.

It’s part of Zafiro, my custom WebGL/three.js-based engine that I’ve been developing to make small worlds feel atmospheric and quick to iterate.

Demo: https://playzafiro.com/isle-lab

What you do in the first minute:

• pick a starter island template
• customize the scene (props/layout) and set the mood (day/night presets)
• save your island locally and come back later

What’s new in this update:

• customizable islands (templates → your own variations)
• a guided onboarding flow so you can get to your first island quickly

If you try it, I’d really appreciate a quick reaction:
1) Does it feel relaxing, or more like a “tool”?
2) Is it obvious what to do without thinking too much?
3) Any performance issues on your device/browser?

Even 1–2 sentences of feedback helps a lot. Thanks!