Boooooring. There's not enough variety. There's just the main puzzle, which is always the same, and a daily puzzle. The main puzzle presents only 3 pieces at a time, and all must be used before 3 more are presented. This removes the ability to strategize, and turns it into a game of chance. You'll quickly hit a point and then not advance. Ever. There's no variety, no winning. The game is: add pieces until you can't anymore. That's it.