🎨
Paint Pool
Colorful balls that bump, trade a little color on every hit, and ring out a note.
Lab
Small tools, interactive demos and half-baked ideas. Open any card to play.
😈
Maxwell's Demon
What is temperature, really? Start with a single ball, then guard a door and sort fast molecules from slow ones.
🛰️
Space Station
Watch the ISS live, with running commentary on whatever it’s flying over.
🌌
Other Eyes
Drag a wavelength ruler and see one night sky through radio, X-ray and gamma-ray eyes.
📚
Murph's Shelf
Stand behind the bookshelf and send a message in falling books.
🥾
Walking the Long White Cloud
New Zealand’s 11 Great Walks: big photos, maps and a side-by-side comparison.
📖
Bible Field Guide 中文
All 66 books of the Bible in one place: stories, maps, family trees and reading plans.
🎨
Color Mixer
Drag the sliders and mix RGB light live.
✨
Made of Stars
Rewind your body to the Big Bang, then collect your cosmic ingredients label.
🌀
Prime Spiral
Coil the numbers into a spiral and the primes snap into diagonals.