Click Start to begin. You have a deck of 98 letters with a basic Scrabble distribution. Each vowel is assigned a shield value and each consonent a sword value. The AI has the exact same deck. Use the letters provided to make words and then click the Make Word button. You will hit the AI for the total of your swords damage minus the AI's shield. The AI will then make a word from its deck and will hit you for its sword minus your shield.
If you can make a word that is six or more letters, you have a chance to get a point of dexterity and/or strength. More dexterity will add to your shield and more strength will add to your sword.