Letterpress is deceptively simple. A five-by-five grid of letters is laid out on the screen. You and your opponent have full visibility to the board, and must make words out of the letters provided. As you do, those letters are colored in—blue for your letters, red for theirs—and each move steals letters back, affecting the letter-count score at the top of the screen. Things get slightly trickier when the letters on the four sides of a played letter are also played in the same color, when the lock-in effect causes the center to go darker. In this case, the letter can still be played, but no points transfer. Each word must consist of at least two letters, and no word can be re-played.