Rules to play Go Fish
Call for cards from all players at once the game moves faster when everyone must give up the wanted cards. This also makes it a better move to ask for a card when your book lacks just one, since whoever might have drawn the fourth one must give it to you. An interesting scoring variant is to assign each book a value equal to its rank. Aces would then count 11, picture cards 10, and all other cards would be worth their face value.