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A cozy 3D terrarium game for iPhone

Mossy Jar

Build a tiny moss world in a jar. Watch it glow at night.

Coming soon to the App Store

See how it plays

How it plays

One order, one tiny world

Every jar starts with a little request from a neighbour.

  1. iPhone screen: an order card from Mira asking for some moss, three mushrooms, one fern and a little lantern, with a ‘Let's make it’ button.

    1/4

    Get an order

    Someone wants a humid little forest for their reading nook. Read the card and pick your jar.

  2. iPhone screen: gravel pouring into an empty glass jar on a wooden desk.

    2/4

    Pour the layers

    Swipe down over the jar to pour gravel, then charcoal, then soil.

  3. iPhone screen: a mossy mountain with a small waterfall, mushrooms and a fern inside a jar, above the item tray.

    3/4

    Plant and decorate

    Place moss, ferns, mushrooms, stones, mountains and waterfalls. Twist with two fingers to turn them.

  4. iPhone screen: the mountain jar with its lid closed at night, fireflies drifting inside, in photo mode.

    4/4

    Close the lid

    Put the lid on, dim the lights and watch the fireflies come out.

A closed glass jar with moss, mushrooms and a lantern glowing on a walnut stand at night, with fireflies drifting inside.

Then the lights go down.

Close the lid, and your little world wakes up in the dark.

Why it's cozy

What's on the order card

Order from ABC Digital

6/6

“A calm little game for the end of the day, please.”

  • Cozy No losing and no timers. Take as long as you like.
  • 2–3 minute orders A jar fits into a short break.
  • Rotate, zoom, photograph Turn your jar, look closely and save a photo.
  • Plays offline No connection needed to play.
  • No ads Nothing pops up between you and your jar.
  • No account, no personal data The app collects no personal data. Nothing to sign up for.
A jar with a rusty little car, a lantern and mushrooms reclaimed by moss.

Optional packs

More lights, more worlds

The full core game is free. Optional packs are one-time purchases. No subscriptions.

  • A mossy jar with red mushrooms and a fern on a walnut stand under a brass arc lamp, in daylight. The same jar lit by the brass arc lamp at night, with fireflies inside. Optional pack

    Lighting & stands

    Classic Light & Stand

    A brass arc lamp and a turned walnut stand.

  • A jar on a woven stone and bamboo stand beside a paper lantern, in daylight. The jar beside the glowing paper lantern at night. Optional pack

    Lighting & stands

    Japan Light & Stand

    A paper lantern and a stone and bamboo stand.

  • A jar inside a floating LED halo on an acrylic stand, in daylight. The jar inside the glowing LED halo at night. Optional pack

    Lighting & stands

    Futuristic Light & Stand

    A floating LED halo, a colour-cycling halo and an acrylic stand.

  • A jar with a bunny, a hedgehog, a fawn and a frog among moss and mushrooms, in daylight. The same little animals curled up asleep in the jar at night. Optional pack

    Critters

    Little Critters

    A sleeping bunny, a hedgehog, a fawn, a frog on a leaf and more small friends who curl up to sleep at night.

  • A jar with a tiny tea table, a teapot, a cake stand on a picnic blanket and bunting, in daylight. The tea party jar at night, with the fairy lights on the bunting glowing. Optional pack

    Tea Party

    Tea Party

    A tiny tea table, teapot, cups, a cake stand and a picnic blanket, with fairy lights after dark.

  • A jar with a small ruined house, an oil drum and mushrooms among the moss, in daylight. The ruined house jar at night. Optional pack

    Wasteland

    Overgrown Wasteland Set

    Twelve pieces of the old world taken back by moss, from a rusty car to a watchtower with a searchlight.

  • A jar with small garden robots, a drone and spare parts on the soil, in daylight. The garden robots at night. Optional pack

    Robotic

    Robotic Set

    Twelve pieces from a retired robot workshop: garden robots, glowing lights and parts.

Prices are shown in the App Store in your local currency.

Made entirely with code

Every object, built in code

Everything inside the game, every jar, plant, robot and texture, is made with code. The app icon was created with the help of AI tools.

The six jar shapes in the game, side by side: a tall jar, a wide jar with a lid, a round bowl, a cloche, a hexagonal glass case and a glass tank.

Where you can play

On iPhone, with Android to come

iPhone app

Available in these countries:

  • United States
  • Canada
  • United Kingdom
  • Australia
  • New Zealand
  • Japan
  • Malaysia

The app is not offered in other countries for now.

Android

An Android version is coming soon.