This is really cool. I had a lot of fun building a hangman style game just now! It took 3 prompts to get it right... here was my third iteration (sorry, didn't save the first two): There is a problem where player 1 is unable to enter the secret word at the very beginning. Fix this issue. Also, clear the letter from the input after each time player 2 makes a guess, but display the incorrect guesses somewhere and don't allow player 2 to guess the same letter more than once.
I think it got a little confused with my last prompt: "Make both players also able to submit the input with the enter key." It correctly added the functionality, but it left it's explanation in the HTML of the page too. Still very cool. Here is the working game: https://backend-pico.onrender.com/hyundai-interface