Paint sand, water, oil, wood, stone and fire onto a grid and watch simple per-cell rules do the rest: sand piles at its own angle, water finds its level, oil floats on water, fire eats wood and dies in water, steam rises and rains back down. Runs entirely in the tab on a 400x225 typed-array grid. Free, no model, no credits, no sign-in needed.

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.