Ice mystery
Can you rescue an ice cube?
Build a tiny shelter that keeps an ice cube from melting.
DifficultyEasyTime20–40 min
You’ll buildAn ice cube shelterYou’ll testHow long it survivesYour goalBeat your own best time
Start this challenge →ChloeLabs
Curious Kids. Future Leaders.
What cool thing can you build today?
Pick a mystery, build something surprising, and watch your ideas grow.
Tap Surprise Me to reveal one challenge.
Choose a challenge
Pick one. Start making.
No perfect answer needed. Try something and see what happens.
Games mystery
Can you invent a game with one strange rule?
Change one familiar rule and see whether the game gets better.
DifficultyMediumTime30–60 min
What you’ll doMake a rule, play-test it, and remix it.
Start this challenge →Dogs mystery
Can you design a puzzle for a dog?
Create a safe treat puzzle and watch how a dog solves it.
DifficultyMediumTime30–45 min
What you’ll doBuild a puzzle, observe, and improve it.
Start this challenge →Space mystery
Can you land a paper spacecraft?
Protect a tiny passenger during a drop from outer space.
DifficultyMediumTime30–60 min
What you’ll doBuild a lander, drop-test it, and redesign it.
Start this challenge →Ocean mystery
Can you make something float twice?
Use the same material to build two completely different boats.
DifficultyEasyTime20–40 min
What you’ll doBuild, float-test, and compare two designs.
Start this challenge →Weather mystery
Can you catch the wind?
Build a simple wind detector that moves when the air does.
DifficultyEasyTime20–45 min
What you’ll doMake a detector, test it outside, and tune it.
Start this challenge →The project loop
Make it. Test it. Make it better.
- WonderPick one mystery.↓
- BuildMake a first version.↓
- TestSee what happens.↓
- SaveKeep a photo or sentence.↓
- Try AgainChange one thing.