Puzzle Word for Mac

From Red Marble Games:

Puzzle Word is classic word search, but with a whole new approach. Click on letters in the grid to form a word; when you do, those tiles disappear, and the remaining letters collapse together. Keep going until time runs out or you clear the board! If you're in the mood for a quick puzzle, just find the words that you see right away. If you want a challenge, you can look ahead, planning your moves so that when one word's letters disappear, another word will fall into place. The full game also comes with a variety of play modes, including a relaxing, take-your-time "brain game" as well as a timed mode.