The point of the game is to spell all the words you can for points, but make sure to get a six-letter word or the game is over. The game is fully playable– tap letters to put them in and out of the word grid, double tap to submit the word. The famous ‘twist’ is performed by tilting the device clockwise or counterclockwise, and then tilting it back again. Once the round is over, words you missed are displayed in caps. By the way, if there’s too many potential words to fit on the screen, the text area up there is scrollable.

http://groups.google.com/group/jiggyapp-devel/web/text-twist