Neal.fun works because every project has a clear idea. You open the page, start scrolling or clicking, and understand the rules without a tour. The subjects can be serious or ridiculous, but the interaction always does part of the explaining.
Finding websites like Neal.fun means looking for that same mix of curiosity and play. Some picks below are Neal projects, while the rest share the habit of turning one good question into something you can touch.
1. Internet Roadtrip
Internet Roadtrip is a multiplayer drive through real street-view roads. Everyone on the site votes on the next direction, so the group slowly travels together without any one visitor taking the wheel.
It is a Neal.fun project, and a good place to start if you have already played the older experiments. The route can be boring, scenic, or unexpectedly funny depending on what the crowd chooses.
2. The Password Game
The Password Game takes a familiar form and keeps adding rules until it becomes a puzzle about chess, chemistry, geography, formatting, and patience.
Each new requirement changes what you thought the task was. That steady escalation gives it the same one-page clarity as the best Neal.fun games.
3. The Deep Sea
Scroll below the ocean surface and meet animals at the depths where they live. Sunlight fades, the water darkens, and familiar creatures give way to things that look invented.
The Deep Sea is another Neal.fun project. Its simple downward motion turns a list of facts into a journey with real scale.
4. Scale of the Universe
Scale of the Universe lets you zoom between tiny particles, people, planets, stars, and structures larger than a galaxy. You can stop anywhere and click an object for context.
It scratches the same curiosity itch as Neal.fun's space and ocean pages, but in both directions at once.
5. What Are The Odds?
What Are The Odds? moves through events with increasingly small probabilities. The visual progression helps turn tiny fractions into something your brain can compare.
It is a clean example of an explorable explanation: one question, one direction, and enough surprise to keep you moving.
6. Asteroid Launcher
Asteroid Launcher gives you control over the size, speed, angle, and impact location of an asteroid. The site then estimates the damage around the chosen point.
The subject is grim, but the model makes unfamiliar measurements concrete. A number is different when the map is centered on your town.
7. Spend Bill Gates' Money
Spend Bill Gates' Money hands you a giant balance and a catalog of things to buy. Hamburgers barely move the number. Private jets help, but not as much as you expect.
The joke is also the explanation. Clicking "buy" makes the scale of extreme wealth easier to feel than another line of zeroes.
8. Life Stats
Enter your birthday and Life Stats estimates how many heartbeats, breaths, blinks, and other ordinary events have filled your lifetime.
The numbers are estimates, but the page is good at making time feel physical. It turns a date into a pile of small repeated actions.
9. Gravity Points
Gravity Points begins as a particle simulation. Click to create wells, then watch the field curve around every new source of gravity.
There is no lesson text to read. The moving particles show what each click changes, which is exactly why the toy is easy to understand.
10. Historical Tech Tree
Historical Tech Tree connects technologies across time. Follow a branch backward to see what an invention depended on, or wander sideways into developments that share an ancestor.
It is more complex than a typical Neal.fun page, but it has the same central promise: explore the idea instead of reading a summary of it.
More interactive rabbit holes
Try our list of interactive websites that feel like toys for more drawing and visual experiments. You can also browse every fun website in the collection.









