ten seconds is really short, so it is a little repetitive but it works! I didn't understand that ten seconds was the time the game lasted, i thought i had ten seconds for each letters and it would go on for as long as i didn't mess it up, so I thought I misheard the first few rounds when it was just the end of the timer. Also, minor detail, i changed my keyboard disposition halfway and it made the game loop the game over line until I reloaded the page entirely.
I like keyboard games, keep going!