Quick controls
- Tap / click
- Lift the top ball, then tap the tube to drop it in
- 1–9
- Pick a tube by its number
- UZ
- Undo the last move
- H
- Show the next move of a shortest solution
- R
- Restart the level instantly
- EscP
- Open the level list
What is Color Sort Master?
Color Sort Master is a ball sort puzzle game where you lift the top ball from one test tube and drop it onto a matching ball or into an empty tube, until every tube holds four balls of one color. Its 100 levels come in five chapters of 20, from Laboratory Basics with 3 colors in 5 tubes to Grand Synthesis with 7 colors in 9. Tubes start half-mixed rather than full, and some boards begin with no empty tube at all, so your opening move is often the hardest one. Each level's Target is the shortest solution a breadth-first search could find, from 4 moves up to 21.