✓ Guaranteed solvableProgression onlyUp to 14 tubes
Progression modeComplete each puzzle to unlock the next level.
Level1
Moves0
Tubes6
Choose a filled tube, then choose where to pour.
✨
Beautifully sorted!
Puzzle complete.
How to play Color Tube Sort
Your goal is to separate the mixed liquids until every non-empty tube contains one color. Select a filled tube, then select an empty tube or one whose top liquid matches.
Pouring rules
You may pour into an empty tube.
You may pour onto the same color when there is enough room.
Matching liquid layers flow together automatically.
An invalid choice clears the selection so your next click starts fresh.
You can select your next tube while the current pour is still animating.
A useful strategy
Keep at least one empty tube available for maneuvering. Build complete color stacks whenever possible, and avoid filling both spare tubes too early.