From the publisher's website:The Hustler will call out a word. Everyone else has to slam a letter down on the table that's in that word. You don't have a letter in the word? Grab any letter as quickly as you can. If you're last to play, you might get a penalty. Grab a wrong letter, though, and you suffer a bigger penalty!Show off your vocabulary, laugh at your friends. Yaddy-Yadda is a word game in a class all it's own. A game takes about 20 minutes and comes with everything you need to play.Rules to other games that use the cards are available at the website too: www.blacknwhitegames.com - BoardGameGeek