A living world in a brass-and-glass case. Drag rain clouds to fill the lake, call lightning, turn the seasons to snow and ice, attract owls, herons and frogs, and follow any creature through its life. Two cases, a valley and an alpine tarn, with photo mode and music.
Terrarium is a small, complete world under glass, lit by a desk lamp in a dark room. There are two cases to keep. The Valley has craggy peaks with forest climbing their slopes, a wide stepped waterfall, and a blue stream winding across the meadow to a turquoise lake, with oaks, blossom, a cabin and a jetty. The High Tarn is a cold alpine cirque: snowfields on the peaks, scree, pines and a dark tarn above the treeline, with short summers and no herons. Each case lives on its own.
Everything in it is alive. Wildflowers, hazel, birch, pine, oak and wild cherry seed, compete for light and water, die back and spread. Roe deer and rabbits graze, mallards dabble, foxes hunt at dusk, trout rise, bees and butterflies work the flowers and fireflies light summer nights. Rabbits keep warrens to sleep in and to bolt into. Every animal has a name, needs and a life story you can read, day by day.
Make the case rich enough and new species come, in stages: a wood mouse is spotted at the vent, a second joins it, and a pair that stays and breeds has settled. Tawny owls follow the mice and roost in the old pines; grey herons wade the shallows for trout and frogs; frogs spawn in spring and their tadpoles climb out as froglets. A swarm of honeybees moves into the skep by the cabin once the meadow is in flower, and pollinates it.
The water is real: rain soaks into the soil, runs off down the slopes into the stream and fills the lake; droughts lower it. In winter snow settles on the peaks and the meadow, the lake freezes from the edges in, frogs sleep in the mud and the herons fly south.
You tend the place, you don't control it: - Hand: drag a cloud over dry grass to make it rain, or pick up an animal and set it down elsewhere. - Seeds: sow the plants where they can grow. - Arrival: ring the glass bell to bring in any species that has settled. - Lightning: strike dry grass, watch the fire spread, burn out and the meadow grow back. - Magnifier: follow one creature; the leaves part and its journal fills as it lives. - The season ring and the clock: turn the year, run time faster, or pause. - Photo mode: hide the interface, bring the camera down among the grass, set the focus, aperture, hour and season, pick a look (golden hour, misty morning, moonlight and more) and a frame, and keep your photos in a gallery.
The field guide tracks every species from spotted to thriving, with what each one needs, and keeps the stories of the remembered dead. A rich, varied case builds up wonder over the weeks, which unlocks brass gauges, field lenses (soil moisture, grass, and each fox's and owl's territory), acorns and cherry stones, a faster clock and a night lantern. Sound follows the weather, the season and the hour, and quiet generated music changes with them: brighter in spring and summer, low and sparse at night and in winter, silent in a storm. Your case is kept in your browser and carries on where you left it.
Runs in WebGPU, with a WebGL2 fallback. Quality is set on the title card: Auto lowers it by itself on a slow machine, and Low halves the trees' cost for weaker graphics. Credits: CREDITS.md.