Tetris + Scrabble = one of the best theme interpretations I've seen. I thought it would be impossible to pay attention to the words at the same time as playing tetris, but was pleasantly proven wrong. Still around half+ of the points I got were on accident. I think you did a great job and I really enjoyed the game. It felt just like tetris. Perhaps it would be better if there was some additional element to help rid of those Q's and vowel bunches which never seem to go away? (like an occasional bomb or something? Just thinking) And I got a lot of non-words (like III as the roman numeral for 3!), but I think other comments already pointed that out.
If you wouldn't mind, I would really appreciate if you gave my game a try :)