They use me to build castles, but I’m not a brick.
They use me to make hands, but I’m not a finger.
I’m international, and cosmopolitan. I’m very often in Monte Carlo, Las Vegas, Atlantic City and even in Punta del Este.
I’m not alive but I have 81 hearts.
I’m a deck of cards.
Because there are 52 cards plus two jokers in a deck, the total is 54.
If you count all the hearts drawn in the 13 cards of hearts, you’ll find 81.