The game is kind of like Hangman but with numbers instead of words.
You're given the ones-place digit for free, as well as whether or not the number is prime, and the number's digital root (if you were to add the digits of the number together, and repeat that process with the new number until you only had one digit left, that number is the digital root).
You have 8 lives, and you must guess the whole number. Guessing wrong makes you lose a life, but every time you guess, you are given the digits you guessed correctly, as well as an additional clue.
I threw this together as a little prototype if you'd like to try it!
(Also I need ideas for clues so if you have any, send them my way)