Click the question mark in the upper-right-hand corner for instructions and a Morse code cheat sheet.
- press the key corresponding to the letter flashing on the dot
- each round consists of 5 to 100 dots
- each round, a letter is added, the speed increases, or both
- increase words per minute (wpm) with up/down arrow keys
- increase the selection of letters with the left/right arrow keys
- press enter for up to three hints if you have forgotten a letter
- the faster you go, and the more letters that can appear, the faster your score increases