The basic game is brilliant: a combination of Tetris puzzle and multi directional Scrabble. Therefore you have to juggle fitting together of falling shapes to complete lines that turn into letters which you make into words. Now to the part of the game that is not fun or interesting. After a set of challenge which are helpful in developing speed and agility, you get challenges that are not just tough but sometimes inexplicable. So the challenges go immediately from beginner level 1 to way hard level 7 without any intermediate steps. I really prefer a "reward" system that is based on badges that you can collection. So you can get three bases for million points, badges for two million, badges for five six letter words in a game. It would be fairly easy to convert current system to something, anything better much better. Learn from Fitbit. Biggest peeve: One challenge says 20 words without lines. What does that mean? You need lines to get letters. So words not on one line? Words not in a line? Words that dont cause a line? All you find out in terms of feedback is that you have failed the challenge which you dont actually understand. Puzzle juicers. You can do better. And I hope you do.