Bubble Sort Puzzle, a color sorting game, is a fun and relaxing game that entertains and stimulates your brain! Quickly sort the colored balls in the tubes until all the same colors are together in the same tube. A challenging yet relaxing game to exercise your brain!. • Free & easy to play. • One finger control. • No time limits! • No level limits! • Offline games, play offline without Wifi. • Easy and addictive gameplay!. HOW TO PLAY: • Tap any tube to move the ball lying on top of any tube into another tube • The rule is that you can only move a ball on top of another ball if both of them have the same color and the tube you want to move into has enough space. Otherwise the ball is rejected. • You can always restart the level at any time or retrace your steps one by one using the back button.