Gravity Games — Predict, Watch, Understand
These free gravity games don’t tell a child the answer — they let the child predict, watch what really happens, and then see why. Most kids are sure the heavier object falls faster. Watching two objects land together is the moment that fixes the misconception, far better than being told. No ads, no sign-up.
Predict which lands first — a heavy object or a light one — then watch them fall together. The surprise is the lesson.
In air the feather flutters down slowly; pump the air out and it falls as fast as the penny. See what really slows it.
Predict how many balls swing out when you release a few — then watch momentum pass straight through.
What kids learn
Gravity pulls all objects downward at the same rate — weight doesn’t change how fast something falls. What changes it is air resistance, which slows light, spread-out things like feathers and leaves. And when objects collide, momentum passes through. Each game isolates one of these ideas and lets the child test their own hunch against reality.
More science games
Explore the full set on the science games hub, including simple machines games.
Common questions
Why don’t heavier objects fall faster than lighter ones?
Ignoring air resistance, gravity speeds up every object at the same rate, so a heavy ball and a light ball dropped together land at the same time. Galileo showed this, and the Apollo 15 astronauts proved it on the Moon by dropping a hammer and a feather together. Air resistance — not weight — is what makes a feather drift down slowly.
So why does a feather fall slower than a rock?
Air pushes back on a falling object, and a feather has a lot of surface area for its tiny weight, so air slows it a lot. Take the air away (a vacuum) and the feather falls exactly as fast as a rock. The Penny & Feather game lets kids pump out the air and see it.
What age are these gravity games for?
Roughly ages 8–13 (grades 3–8), and each game shows its grade band. Gravity and air resistance (Which Falls Faster, Penny & Feather) suit grades 3–5; momentum (Newton’s Cradle) is middle-school. The predict-and-watch format needs no reading-heavy setup.
Are the gravity games free?
Yes — free, no ads, no in-app purchases and no sign-up, running in any browser.