Give every color a tube of its own. A level is complete when every tube is either empty or full of one color.
Tap a jar to select the matching group at its top, then tap an empty jar or one with the same top color. All consecutive matching balls that fit move together, and count as one move. Each jar holds four. Balls below a different color stay put.
Tap your selected jar again to cancel. Green jars show possible destinations; the +number shows how many balls will move. Undo brings back the whole group.
Every color has its own symbol, too. There is no timer. Use the two spare tubes to make room, and Undo if you get stuck. Undo counts as another move; try to beat your own record.
Keyboard: Tab or arrow keys move between tubes; Enter or Space selects and places a ball. Home and End jump to the first and last tube. U undoes; Escape cancels a selection.
Choose any of 12 levels. Restart and level changes ask before clearing unfinished play. Help and leaving the window pause the board.
Completed levels and lowest group-move counts save on this browser when storage is available. Earlier completed levels stay checked; group moves have their own best records. An unfinished board stays only while this page is open. No account needed.