Poker is a family of card games that share betting rules and usually the hand rankings. Texas hold 'em (also hold'em, holdem) is the most popular poker game in the casinos and poker card rooms across North America and Europe, as well as online. The surge in popularity of Poker can be attributed to the organization of televised multi-million dollar international events like the World Poker Tour and the World Series of Poker (WSOP) and popular western movies like Rounders. The popularity of No-Limit Texas Hold'em can be gauged from the fact that this is the game that decides the WSOP Champion - a feat that not only ensures your place in history but also makes you an instant multi-millionnaire. WSOP 2009 championship prize was a whopping 10 million USDs - the biggest for any sports event in the history of mankind - and all for playing cards.