A fun word game using dropping scrabble tiles - Deep Leap. The letters drop down into a row. You create words to use up the letters and see the number of tiles counting down. If you can't find a word before the row fills, you may have a letter shift off the screen to allow a new letter to drop and you will no longer be able to use it. Tricky but fun... just make sure you don't end up with a line of vowels like I did!!