A party guessing game
Everyone can see your card.
Except you.
Ask yes-or-no questions until you work out what you are. Two to eight players, nothing to install. Rooms survive a refresh, so you can close the tab and come back.
1Everyone gets a card. Yours is the one you can't see.
2On your turn, ask one yes or no question. Everyone else answers.
3Guess with "am I ___?" when you're ready. First one out wins.