Sites like Neal.fun
Neal.fun works because it found a format almost nobody else uses: an explanation you operate. You scroll, drag or spend, and the understanding arrives as a consequence of doing rather than reading.
That format is rare, which is why "sites like Neal.fun" is a hard search to answer well. These are the genuine relatives — not merely fun sites, but sites built on the same idea.
- 1
Nicky Casencase.me
The closest thing there is. Explorable explanations where you move the pieces and the conclusion emerges — the segregation one is the best ten minutes on this list.
Open it here → - 2
OCEARCH Shark Trackerocearch.org
Live shark tracking. Same principle: real data, presented so that exploring it teaches you the shape of the thing.
Open it here → - 3
29a.ch Apps29a.ch
A researcher’s collection of web experiments, several of which explain a physical phenomenon by letting you break it.
Open it here → - 4
Babadumbabadum.com
Vocabulary in a dozen languages taught entirely through pictures. Learning disguised as a game, which is the Neal.fun trick exactly.
Open it here → - 5
Mondrian And Memondrianandme.com
Build a Mondrian and discover, by failing, why the originals are balanced.
Open it here → - 6
Electric Boogie Woogieelectricboogiewoogie.com
The same idea again with a different painting — rearrange it and the composition rules become obvious.
Open it here → - 7
Shepard Toneoptical.toys
A tone that rises forever. A single interactive demonstration of one specific auditory illusion.
Open it here → - 8
Disappearing Bicyclistoptical.toys
Shows you directly how little your peripheral vision resolves. You cannot argue with it because you are the experiment.
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What these share is that the interaction is the argument. Read a paragraph about peripheral vision and you will nod; watch a cyclist vanish because you looked slightly to the left and you will remember it.
Questions
What is Neal.fun?
A site by Neal Agarwal collecting interactive explainers — The Deep Sea, Spend Bill Gates’ Money, Absurd Trolley Problems and others. Each turns a subject into something you operate rather than read.
What are the best alternatives to Neal.fun?
Nicky Case’s explorable explanations are the closest in both format and quality. For live-data equivalents, OCEARCH’s shark tracker and the experiments at 29a.ch work the same way: give people real data and a control, and let understanding follow.
Every site above was loaded in a real browser and verified working before this was published. See the full catalogue.