The purpose and fun of playing any game is to win. I think the game has changed in that when ever I get close to the last row of bubbles, or even half of the last row gone, there are no more pairs, causing another two rows to drop down. Thiis happens so much, it is a never ending game, and I just quit playing. While I know you want the game to be challenging, there has to be an end that has resulted from fair play and performance by the player. To go over and over the last 2-3 rows is boring and tiring. A game has to be fun and rewarding to play, not one you just want to quit.