Free science games for kids
Peabody has free science games for kids: Stone Age, where you wake on a new planet and build everything from a rock, and a Science land in the World with animals, plants, the sky and how things work. Add real hands-on experiments from the Workshop. All free, no sign-up. Free through 2026.
Science games
- Stone Age: Wake up on a new planet. Build everything from a rock. Each thing you build comes with a science question about how it works; there are six islands and 77 builds.
- Build World: Build your own world, block by block. Fly, swim, and find the glowing Wonder blocks. Building teaches how things fit and hold up.
- World: the Science land: Animals, plants, the sky, and how things work. A trail of questions with a Wonder to find at the end.
Hands-on science experiments to try at home
The Workshop has step-by-step builds that are really science experiments. Each one ends with a test, so a child measures what happened and then changes one thing to make it better.
| Build | Ages | The science | Time |
|---|---|---|---|
| Wall Marble Run | K–3rd | Things roll downhill, and a gentle slope makes a slower ride. | 30 min |
| Paper Cup Tower | K–2nd | A wide bottom holds a tall tower up. | 20 min |
| Shoebox Guitar | K–3rd | A tighter, thinner band wiggles faster and sounds higher. | 30 min |
| Ramp Races | K–3rd | A steeper ramp makes a faster car. | 20 min |
| Foil Boat | K–4th | A wide boat pushes away lots of water, so it floats with more on board. | 20 min |
| The Pigs' House vs. the Wolf | K–3rd | Triangles and wide, heavy bottoms stand up to the wind. | 30 min |
| Paper Airplane Lab | 1st–5th | Wings push on the air, and where the weight sits decides if a plane glides or dives. | 30 min |
| Craft-Stick Catapult | 1st–5th | A lever stores your push in the bent stick, then throws it. | 30 min |
| Straw Rocket | 1st–5th | Your breath pushes the rocket off the straw, and the angle decides how far it goes. | 30 min |
| Index-Card Bridge | 3rd–6th | Folding paper makes it stiff, so it holds far more. | 45 min |
| Light-Up Card | 3rd–8th | Electricity only flows round a full loop: one gap and the light goes out. | 45 min |
| Elephant Toothpaste | 2nd–8th | Yeast splits peroxide into water and oxygen super fast, and soap catches the oxygen as foam. | 15 min |
| Stretchy Slime | 3rd–8th | The activator links glue's long chains into a net, so runny glue turns into stretchy slime. | 25 min |
| Oobleck | K–8th | Oobleck goes hard when you push it fast and runny when you go slow. | 10 min |
| Fizzy Volcano | K–8th | Baking soda and vinegar make a gas, and soap turns the gas into foamy lava. | 15 min |
| Salt Lava Lamp | K–8th | Oil floats on water, and salt can drag it down for a ride. | 15 min |
| Magic Milk | K–8th | Soap grabs fat, and as it races across the milk the colours ride along. | 10 min |
| Rain Cloud in a Jar | K–8th | A cloud holds water until it gets too heavy, and then it rains. | 10 min |
| Walking Water Rainbow | K–8th | Water can climb up through tiny gaps, even uphill. | 15 min |
| Giant Bubbles | K–8th | Soap makes water stretchy enough to wrap around air. | 20 min |
| Soda Geyser | 2nd–8th | Gas hiding in soda rushes out all at once when it finds rough places to make bubbles. | 15 min |
| Secret Message | K–8th | Some colours change when they meet a base, like baking soda. | 15 min |
| Potato Power | 3rd–8th | Two different metals in a juicy potato make a battery, and a chain of them adds up. | 30 min |
| Squishy Circuits | 1st–8th | Salty dough carries electricity and clay stops it, so you can sculpt a circuit. | 30 min |
| Static Magic | 2nd–8th | Rubbing moves electric charge, and charges pull and push without touching. | 20 min |
| Tube Flashlight | 3rd–8th | A switch is a gap in the loop that you can open and close. | 40 min |
| Egg Drop Challenge | 3rd–8th | Slow the fall and soften the stop, and a raw egg can survive a big drop. | 45 min |
| Chain Reaction Machine | 2nd–8th | A little push sets stored energy free, and it passes from one thing to the next. | 45 min |
| Cup Zipline | 2nd–8th | Gravity pulls the rider down the slope, and a steeper slope is a faster ride. | 30 min |
Why games and experiments together
A game gives a child questions to answer and a reason to try again. An experiment lets them see the answer with their hands. Peabody has both in one place, free.
Questions parents ask
Are the science games free?
Yes, free through the end of 2026, with no ads and no sign-up to start playing.
What grades are they for?
Stone Age and the World's Science land follow the grade a child picks, from kindergarten up. The experiments list their ages in the table above.
Do the experiments need special supplies?
They use things most homes have, such as paper, cups, tape and straws. Each build lists what it needs, and any step with a sharp or hot tool is marked for a grown-up to do.
More: free games by grade, free typing games and the science behind Peabody.
Checked against how Peabody works on 18 October 2026. Written with help from AI, from Peabody's own code and library. Peabody is a learning app, not an assessment: if you're worried about your child's learning, talk to their teacher.