HueStack

HueStack is a calm, colorful water-sort puzzle you can pick up any time. Glossy glass tubes hold layers of bright candy-colored liquid, all jumbled together. Your goal is simple: pour the liquids from tube to tube until every tube holds a single pure color.

Tap one tube to pick it up, tap another to pour. Only matching colors stack, so every move is a small, satisfying decision. Watch the liquid arc between tubes, settle with a gentle slosh, and seal with a sparkle the moment a tube is sorted.

Thirty hand-tuned levels build from breezy three-color starters to brain-bending nine-color racks. Stuck? Undo any move freely, restart instantly, or ask for a smart hint that always points to a real solution. Earn up to three stars per level by solving in as few moves as possible, and chase eight achievements as you master the rack.

Track your progress with detailed stats, switch between light and dark themes, toggle sound and haptics, and turn on high-contrast colors for extra clarity. No timers, no pressure, no internet required — just you, the tubes, and a quiet flow of color. Pour, sort, relax.