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CritterStack Stack Anything. Share Everything.

A physics-based stacking game where you build wobbly towers of cats, turtles, or anything you want. Make your own characters. Share them with friends. No ads, ever.

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Grab. Stack. Try Not to Topple.

Pick up a critter. Drop it on the pile. Use your phone's tilt sensor to lean the tower. See how high you can go before gravity wins.

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Grab

Drag a critter from the top of the screen. Each one has different size and weight.

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Stack

Drop it carefully onto your tower. Physics does the rest. One wrong move and it wobbles.

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Tilt

On mobile, tilt your phone to shift gravity. Lean into the wobble or try to save the stack.

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Tumble

Eventually the tower falls and critters scatter everywhere. Beat your record and go again.

StackPacks: Your Critters, Your Rules

StackPacks are custom character collections anyone can create and share. Turn your family pets into stackable critters. Make a dinosaur pack. A food pack. Whatever you can imagine.

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Cats Pack

Kittens, adults, and chonkers. Three sizes of feline chaos with custom meows.

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Turtles Pack

Hatchlings to elders. Slow and steady stacking with shell-clinking sounds.

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Family Pets

Upload photos of your actual pets. Stack your real dog on your real cat. Finally.

Make Your Own

Any images. Any sounds. Download the template, fill it in, share with a code.

Games Should Be Fun, Not Predatory

CritterStack is built by a dad for his kids. That means no dark patterns, no data harvesting, no manipulative monetization. Just a game.

Zero Ads

No banners, no interstitials, no rewarded videos. Your kids see the game, not marketing.

No Accounts Required

Open the link and play. No sign-up, no email, no personal data collected.

Works Everywhere

Browser-based. iPhone, Android, tablet, laptop. Send a link and everyone plays instantly.

Stack Higher. Share Wider.

The stacking game that becomes whatever you want it to be. Made with love in San Francisco.

Play CritterStack