You just guess each other’s ages and birthdays, and when someone guesses your age or birthday, and it is wrong, you reply by either saying"Higher", or “Lower”. Please note that if you participate, you are comfortable with letting others know your birthday and age. I will start with the first person who joins.
This seems maybe a little to personal for a forum game
Well it is a little personal, but I said in the game rule that people who want to join have to be comfortable, and I can always lower the “amount of personal things” by changing what you are guessing