Missing Letters is a real-time word game that is a race for players to declare words that start with the Start-Letter, end with the End-Letter, and include at least one letter from the Middle-letter decks.

Once a word is called out, that player hits the timer, and all other players have until the timer is up (5-15 seconds) to say a word that uses more middle letters than the first word. Whoever says a word with the most letters on the table wins. The winner of the round gets the cards of the letters used in their word.

The game ends when 1 stack of letters is empty. Each card is a point. The high score wins.