SortStack: Color Sort Puzzle

New: Daily Challenge is live! One puzzle, every player, every day - plus hidden "frosted" tubes that add a whole new layer of sort-puzzle strategy.

SortStack is the color sort puzzle game that's easy to learn, endlessly satisfying, and impossible to put down.

Tap a tube to pick it up, tap another to pour - simple as that. Sort every color into its own tube to clear the level. It's the classic ball sort / water sort formula you already love, tuned for smooth, tactile, one-thumb play.

WHY SORTSTACK

• 200+ handcrafted-difficulty levels, from easy warm-ups to genuine brain-benders, organized into chapters so you always know what's next.
• Every puzzle is guaranteed solvable. No impossible boards, no dead ends you can't undo your way out of.
• Undo and Reset whenever you want - this is a relaxing puzzle game, not a punishing one.
• Stuck? Use a Hint to see the solver's next suggested move.
• NEW: Frosted tubes. Starting in the later chapters, some tubes hide their contents until you tap them - adding a memory twist that keeps even sort-puzzle veterans on their toes.
• Daily Challenge: one shared puzzle, seeded from today's date, the same for every player worldwide. Build your streak and see how many moves you need.
• Track your stars and best-move count on every level.
• Clean, glass-and-liquid visuals with a calm, focus-friendly color palette - perfect for a quick break or a long unwind.

A GREAT FIT IF YOU LIKE

Water sort puzzles, ball sort games, color sorting games, tube-sorting brain teasers, or just clean, logic-driven puzzle games you can play in short bursts or long sessions.

Sort your way to a clear mind. Download SortStack and start stacking.