Slime Mold

Physarum agents that lay and follow trails, weaving organic network patterns.

Thousands of agents lay and follow chemical trails, weaving slime-mold networks. Move your cursor to drop food and watch the swarm reach for it.

About Slime Mold

This slime-mold (Physarum) simulation runs thousands of tiny agents that each deposit a chemical trail and steer toward stronger trails they sense just ahead. The trail map diffuses and evaporates every frame, so the swarm spontaneously organizes into the branching, vein-like transport networks that real slime molds use to solve mazes. Adjust the sensor angle and distance, turn rate, evaporation and agent count, drop 'food' with your cursor to pull the network around, and export a high-resolution PNG.

How to use Slime Mold

  1. Press Play. Start Slime Mold and watch the animation evolve in real time. Use Pause and Step to inspect it frame by frame.
  2. Adjust the rules. Use the side panel to change the parameters — the simulation responds live, so you can steer the emerging pattern.
  3. Explore variations. Press Randomize for a new starting point, or copy the share link to reproduce an exact result.
  4. Export. Pause on a frame you like and download it as a high-resolution PNG.

Frequently asked questions

What is Slime Mold?

This slime-mold (Physarum) simulation runs thousands of tiny agents that each deposit a chemical trail and steer toward stronger trails they sense just ahead. The trail map diffuses and evaporates every frame, so the swarm spontaneously organizes into the branching, vein-like transport networks that real slime molds use to solve mazes. Adjust the sensor angle and distance, turn rate, evaporation and agent count, drop 'food' with your cursor to pull the network around, and export a high-resolution PNG. It runs entirely in your web browser on GeoPatternLab, free and with no sign-up.

Is Slime Mold free to use?

Yes. Slime Mold on GeoPatternLab is completely free, with no sign-up or download required. Create as much art as you like and export it directly from your browser.

How do I download my Slime Mold artwork?

Use the export buttons in the toolbar to save your work as a high-resolution PNG image. Files download straight to your device.

Does Slime Mold work on phones and tablets?

Yes. Slime Mold is fully responsive and works with touch input on phones and tablets as well as with a mouse or trackpad on desktop.

Can I use Slime Mold artwork commercially?

Yes. Artwork you create with Slime Mold is yours to use for personal and commercial projects, such as wallpapers, prints, textiles, and teaching materials. See our Terms of Use for full details.

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