Grainfall · A Garden of Ripples
Restore ten sand gardens by adding grains to marked cells: at four, a cell topples and sends one grain to each neighbor. Match the exact final pattern within a drop budget. All ten authored Abelian Sandpile puzzles and original mathematical engine retained; English interface, manual wave controls, undo, shortest-route nudges, a free garden and device-local completion journal. Original GPT-painted garden art bundled locally. Source: https://github.com/xiaoxuhui/abelian-sandpile (MIT; 1 star observed; maintained October 22, 2026). Metadata tags: github-source, game.
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