❋THE WINTER CONSERVATORY

A LITTLE ORDER. A LITTLE WONDER.

Frostlinethe spin garden

A world of tiny arrows,
a garden waiting to thaw.
Two in. Two out. Find the balance.

GARDEN 01 / 08

First thaw

0 / 4lanterns balanced
A painted winter conservatory with bonsai, copper vines, glowing amber stones and turquoise pools
0 flips · — remaining

Loading your garden…

FIELD NOTES / FROSTLINE

Small arrows.
Emergent order.

Spin ice is a family of magnetic systems whose local balance can produce surprisingly rich collective behavior. This game borrows the square-lattice “two in, two out” rule. A flip can move a defect to a neighbor; a closed loop can change while preserving balance.

Frostline is an original abstract puzzle, not a physical simulator. Boundary arrows and studded interior arrows are fixed; every garden has a solution. Any arrangement with two arrows entering every lantern wins.

Inspired by HKUST’s October 21, 2026 spin-ice research report. Scientific GitHub reference: mumax/Hotspice (GPL-3.0). No Hotspice code or assets are used.

Original game code: MIT. Winter conservatory illustration generated with a GPT image model, optimized and bundled locally. All gameplay runs on your device.

Completion records are saved only in this browser.