CozyJars

CozyJars is a cozy pixel-art game about building tiny terrariums in mason jars.

Pour gravel, charcoal and soil grain by grain – every grain is a pixel that trickles, rolls and settles. Mist the soil, sprinkle moss, sow ferns and put the lid on. Then watch in time-lapse as your jar comes alive: water rises, fogs up the glass and runs back down, moss creeps over damp soil, ferns unroll, mushrooms pop up.

Build it wrong and the jar tells you: soggy soil starts to rot, white mold creeps in, the moss dries out. Nothing is ever lost – open the lid, add springtails, fix it.

In this demo

• Falling-sand layers: gravel, charcoal, soil, coloured sand, clay pebbles, bark and leaves
• A living jar: water cycle, moss, ferns, fittonia, mushrooms, rot, mold and springtails
• Your terrarium journal: 16 discoveries to make
• Eight orders from Mrs Hummel next door, each bringing something new, the later ones without a recipe
• Stones that roll and tumble, and a little deer
• A room that lives through the day: morning sun, rain on the window, lamps at night, soft piano music – open the window to hear the birds

How to play

Left click pour · Right click scoop · 0–9 pick a tool
Space time-lapse · D lid · R empty the jar
F12 photo · M sound · H controls · Esc menu

In English and German (Esc → Settings). Your jar saves itself, in the browser too.

Feedback

This is an early demo, and I'd love to hear what you think: what you built, what confused you, what you wish you could do. Leave a comment below!

Music made with Suno. Sounds: CC0 recordings from Freesound and Kenney.