Neal.fun
Neal Agarwal's collection of one-idea interactive toys, from spending Bill Gates' money to scrolling the whole ocean floor.
Opens in a new tab. We do not control this site and it may have changed since we catalogued it.
How to get the most from it
Neal.fun sits in Interactive Explainers under Learn, filed as rabbit hole.
- Open it when the evening is free. It has no natural stopping point.
- It works on a phone or a desktop, so open it on whatever is nearest.
- 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 clever, brainy and funny.
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
- A long evening with nothing planned
- Being impressed by a clever idea
- Giving your brain a workout
- A reliable laugh
- A quiet break at your desk
- Killing time on your phone
- Trying it with zero commitment
Neal.fun: quick answers
Is Neal.fun free?
Yes. Neal.fun is free to use and needs no account.
Do I need an account to use Neal.fun?
No. You can use Neal.fun without signing up for anything.
Does Neal.fun work on a phone?
Yes. Neal.fun works on phones as well as desktop browsers.
Is Neal.fun safe for work?
Yes, we file it as safe for work. It also works muted.
How long does Neal.fun take?
We file it as "Rabbit hole": Clear your evening. We warned you.
More in Interactive Explainers
All 15 in Interactive ExplainersDrag mildly biased shapes around a grid and watch a segregated neighbourhood assemble itself without anyone intending it.
A quantum computing textbook with spaced repetition built into the page, so what you read has a chance of staying.
Amit Patel's tutorials on pathfinding, hexagonal grids and noise, with every parameter exposed as a slider you can ruin.
- 10 min
- Desktop
Brown University's visual introduction to probability and statistics, one animated chapter per concept.
- 10 min
- Desktop
Same mood: clever
All clever sitesWordle for equations: eight tiles holding one arithmetic statement that has to balance as well as being correct.
- 2 min
Board games rebuilt for a group on a video call, with each person playing from their own phone. Codenames and Wavelength included.
- 10 min
Fast, minimal tracker that pings you the moment a followed episode airs. Open source and deliberately kept lightweight.
- 2 min
Notebooks for building charts in the browser, with a public gallery of thousands you can fork and pull apart.
- 10 min
- Desktop
Keep exploring
Category
Time and mood
Have a site of your own? Suggest it for Detour or browse the AltFTool backlinks hub.