Daily Water Sort
Primary daily gamePour connected top layers and finish every bottle with one color.
- Today
- medium
- Board
- 5 colors · 7 bottles
Daily Stack Sort Challenge
Rotate the hand tile through each column, reveal every question tile, and finish with one color per locked stack. Everyone receives the same replay-verified puzzle for the UTC date.
Daily Stack Sort
Today's Stack Sort Puzzle
Challenge #006July 27, 2026New puzzle at 00:00 UTC
Your hand
This tile enters the top of the column you choose.
Choose any active column.
Challenge complete
Best: No best yetPrevious Stack Challenges
Daily Challenge collection
More Daily Challenges
Daily Water Sort is the primary daily challenge on SortingGames.io. You can switch games without changing each game's saved progress.
Daily Ball Sort
One ball per moveMove one exposed ball at a time until every tube contains one color.
- Today
- medium
- Board
- 5 colors · 7 tubes
Stack Sort rules
- Choose any active column. The hand tile enters at the top and the bottom tile returns to your hand.
- Question tiles reveal their real color only when they reach the hand.
- An unrevealed question tile cannot complete a column.
- A full single-color column receives a green check and locks permanently.
- Complete every column with the rainbow tile in your hand.
How the daily Stack Sort challenge works
A server-generated schedule selects one of 24 replay-verified levels at 00:00 UTC. The schedule decides the puzzle; local storage only restores progress, time, best moves, and completion on this device. Stack Sort does not use a Solver in this version.
Daily Challenge collection
Daily Water Sort | Daily Ball Sort | Daily Stack Sort Archive
FAQ
When does the puzzle change?
The challenge changes at 00:00 UTC for everyone.
Must a question tile be revealed?
Yes. It must reach the hand and reveal its real color before its column can complete.
Can a completed column move again?
No. A green completed column is permanently locked.
Does Stack Sort use a Solver?
No. Published levels are generated from reversible moves and validated by replaying a stored reference path.