#1 problem, sound effects frequently dont play.
#2 is there there is no feedback on how your score compares to your previous score, so theres no sense of accomplishment for getting a high score.
#3 you cannot move tiles that are falling, making it unnecessarily difficult to make the combos that are at the heart of mastering the game.
Secular Humanist about Piyo Blocks 2, v2.1.0