Brain Puzzle Game 2525

Brain Puzzle Game 2525. This is the best brain-training game! "2525" is a very refreshing brain-training game. Can you clear simple-looking but actually difficult over 90 stages? You have to remember only one rule! Bump Smile-face-ball to Sad-face-ball. Sad-face-ball will be changed to smile-ball immediately! You can enjoy this game if you remember only this rule.