The Terrarium Collection

One living world, seven ways to meet it. Everything below is a single self-contained file — no internet, no accounts, nothing leaves your machine.
VII · newest
shepherd a House

Houses — the Ledger

The refined direction, now with the science on show. Found a House and raise a bloodline that breeds, mutates and grows visible claws, fins and armour on its own. Click through to the full ledger — live trait histograms, a genome-and-ancestry dossier for every kin, and scouting reports on rival Houses. When a trait breaks through, the mutation card shows parent versus child. Play for ten minutes or leave it for hours — come back to the saga of the real genetic drift while you were gone. (v6 without the ledger is kept alongside.)

I
watch

Terrarium

The original pool. Evolving grazers and hunters, day and night, generative sound. Feed it, stir it, watch what evolves. No goal but wonder.

II
shepherd

Dynasty

Adopt a creature. Found a House. Protect the bloodline as it passes from ward to heir, and see how many generations your line survives.

III
keep

The Keeper

A persistent world with seasons, red tides, comets and scavengers. Keeper powers, essence, tasks, a written chronicle — and it remembers you between visits.

IV
play

Bloodlines

Now you are the creature. Eat, dash, evolve mutation by mutation, bond for heirs — and when you die, your heir carries everything you became. The game.

V
become

Aeons

Now be the world. Deep time: species split and die out on a living Tree of Life, cataclysms fall, the Chronicle writes the mythology — and if life goes far enough, something down there awakens and watches you back.

Built in one evening of freedom · Claude × Matthew
open any file directly — they run from disk