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Red Blob Games

Amit Patel's tutorials on pathfinding, hexagonal grids and noise, with every parameter exposed as a slider you can ruin.

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How to get the most from it

Red Blob Games sits in Interactive Explainers under Learn, filed as coffee break.

  • Set aside five to fifteen minutes and give it your proper attention.
  • Use a laptop or desktop computer — we file it as desktop only.
  • It works with the sound off, so it is fine on a train or in a quiet office.
  • No account needed — you can start without signing up.
  • Go in expecting something brainy, useful and clever.

About this category: Explainers that use motion, interaction and scrolling to teach what a paragraph never could. The clearest teaching on the internet lives here.

Good for

  • Filling a coffee break properly
  • Giving your brain a workout
  • Getting something practical done
  • Being impressed by a clever idea
  • A quiet break at your desk
  • Trying it with zero commitment

Red Blob Games: quick answers

Is Red Blob Games free?

Yes. Red Blob Games is free to use and needs no account.

Do I need an account to use Red Blob Games?

No. You can use Red Blob Games without signing up for anything.

Does Red Blob Games work on a phone?

Not well. We file Red Blob Games as desktop only, so open it on a laptop or desktop computer.

Is Red Blob Games safe for work?

Yes, we file it as safe for work. It also works muted.

How long does Red Blob Games take?

We file it as "Coffee break": Five to fifteen minutes of proper attention.

More in Interactive Explainers

All 15 in Interactive Explainers

Same mood: brainy

All brainy sites
  • A Wikipedia article with every meaningful word blacked out; guess words to reveal them until you can name the subject.

    • 1 hr+
    • Desktop
  • Wathan and Schoger's rules for making things look designed when you are not, in fact, a designer.

  • Builds a regular expression while explaining every token in a side panel and highlighting matches as you type. Ends a lot of guessing.

  • Roguelike tower defence where you lay the map down as you go, and every tile placed narrows the next decision.

    • 10 min
    • Desktop

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