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LOOPY

Draw a system, press play and watch it behave.

  • Rabbit hole
  • Alive · checked 16 days ago
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Your verdict:

LOOPY is a tool for thinking in systems. You draw circles on a canvas, connect them with arrows, tell each arrow whether it pushes things up or down, and then press play to see how the loops behave. Feedback loops, runaway growth and balancing forces all become visible rather than abstract.

It is part sketchpad and part simulation, and it is built to be understood quickly. You can make a model of something small, like a popular cafe or a spreading rumor, and watch the system move. It is a way of explaining ideas to people who tend to glaze over at diagrams, because the diagram does something.

LOOPY is by Nicky Case and lives at ncase.me, alongside several other playable explainers. Treat it as a rabbit hole. A natural fit for teachers, designers and anyone who likes to see how things connect.

Tips for getting the most out of it

  • Start with a very small system of two or three circles.
  • Use it to explain an idea to someone else.
  • Try a loop that feeds itself and one that balances itself.

Questions about LOOPY

What is LOOPY?

LOOPY is a free tool for drawing and simulating systems. You draw nodes, connect them with links, and watch how feedback loops make the system behave over time. You can find it at ncase.me, and odd-sites.com lists it as a long rabbit-hole visit.

Who made LOOPY?

It is by Nicky Case, who hosts it at ncase.me with a number of other interactive explainers. Check the site for credits and any collaborators. We check the link daily, so you can see whether it is still alive. It is free to open in a browser, with nothing to install.

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