Once the game starts, you can start collecting words by clicking on the respective letters. After tapping on a letter, some of the buttons are disabled so you can only select adjacent letters as your next. The current letter is highlighted in red — if you click it, that letter is removed from your word again. To clear the whole word out and start from scratch, just tap or click the Clear button.

Your word has to be at least 3 letters long to submit, and it has to be recognized by Mini's spellchecker. It's not perfect, so unfortunately you may encounter some legitimate words that aren't submittable. Dictionary words will work however, including their plurals and conjugated forms. Submit a word using the Submit Word button and it will be added to your total score. At this point, other players can see that your score has increased, and the word has been added to your final word list.