The goal of Three Words is to form (wait for it...) three words using the set of available tiles. Words are scored by adding up the point values for each letter. Blue (double) and red (triple) bonus squares multiply the value of the letter in that square by 2 and 3, respectively. The total score is calculated by adding up the score from all three words. Once three valid words have been formed (indicated by the green outline on each word's score), you can submit your name and score.
You can move letters into place by either dragging the letter from the letter bank or by clicking the unused letter and then clicking on the destination. To remove a played letter, click on the letter to return it to the letter bank.