Based on "How You Can Boost Your Brain's Willpower with a Simple Working Memory Exercise". This is a game to take a series of letters and reverse them from memory. The number of letters determines how many letters are generated at the start. To play, click start button, it will display a series of letters for you to memorize. Once you have memorized the letters, click the continue button and attempt to write down the letters in reverse order in the form that appears.