Click on adjacent sides of the cubes to form words. Click on the "Add Word" button to add words to your word list. Click on the "Remove Last Letter" button to de-select letters you've already selected. Hold down the control key on your keyboard while clicking on a cube to remove it. When you click on a letter, adjacent letters that can be used to form a word will turn red. Words with 4 or more letters give you more time on the clock.