Ousia Research

Musegotchi

A small creature in a box. It is hungry, and it notices.

Open on its own ↗
Read about the game

The three

The design is in what stays out.

01

The streak is never shown

It stays off every meter until the day is about to break. Then the pet says so. The number buys nothing; growth is the care count alone.

02

It learns no fact about you

It keeps what you did, never who you are. The daily answer becomes one rolling digest that can tell only whether today differs from yesterday.

03

The window is not the door

It can grow on days 2, 4 and 8 when its care is good enough. Miss the day and it tells you; good care can still let it catch up.

The four forms

What it becomes changes what it does.

At day 8 the pet stops growing. Its form is folded from the care log rather than stored, so a saved game cannot disagree with it.

Steward

Kept clean. It tidies after itself.

Prospector

Kept playing. It stays restless, and pleased about it.

Clerk

Kept fed. It reads the day out in its own voice each morning.

Drifter

Nobody made a project of it. It asks more often. This is not a failure state.

The numbers

A record you can check.

Measured 2026-09-25 against this artifact.

Self-tests, asserted both ways99/99
Live checks against the running page17/17
Pixel lattice, non-flat0.000% non-flat
Positive control, meant to fail23.783% FAIL (positive control)
The whole game, one file343,151 bytes
SHA-256 of that filef2121b77715d740c…
Network calls in the game0

from node test/harness.js selftest, python3 test/live_check.py, python3 test/check_grid.py against musegotchi.html on the date above; re-measure before citing after any edit. 99/99: the front door, the closing line, feedback, animalese, the eight-room picker, and the four long-game forms.

The control is included on purpose. A checker that cannot fail is not evidence.

The sound

The room follows the pet.

12 effects, 8 rooms. Counted from the MP3 files at build time. Sound is off by default and never required. Leave the audio folder out and the game remains complete.

The room is chosen from the pet’s state, not the clock on your wall. Rooms found on disk: dawn, daylight, evening, firelight, kitchen, midnight, rain, snowfall. Its voice is generated from the same seed as its face and name.

Limits

Before you judge it.