As the most relaxing and addictive color sorting game, this ball puzzle is engineered to both entertain and sharpen your cognitive faculties. While strategically sorting the colored balls to fill each bottle with the same color, the Zen-like focus it cultivates will relieve stress and provide a necessary distraction from daily routines. This classic color sorting game is intuitive to play, but difficult to master. Tap to transfer a colored ball from one bottle and stack it into another. Success requires careful strategic moves and advanced planning skills. With thousands of challenging ball sort puzzles available.