Vials: ASMR Sand Sort Puzzle

A quiet ASMR sand-sorting puzzle. Pour coloured sand between hourglass-shaped vessels until each one holds a single colour. No timers, no fail state, no pressure — the pleasure is the pour itself: a hand-tuned animation and layered sand audio. 1000 levels with a difficulty curve calibrated by an offline solver, so it stays gentle for a long time and then quietly gets interesting. Live on the App Store and Google Play.

Tap a vessel to pick up the sand from its top, then tap another to pour it in. Sand only pours onto the same colour, or into an empty vessel. A level is solved when every colour sits in one vessel. Mouse or touch — one tap to take, one to pour; no keyboard needed. Three helpers cost coins: undo a move, shuffle the board, add a spare vessel.