The world has extremely many online poker rooms, and depending on where you live, you can play at most of them. Some are for US citizens only, others are not allowed for American customers. E.g. Full Tilt Poker is not allowed in every country in Europe, unless you pay some sort of tax, assuming that you want the money you win withdrawn from the poker room.
One poker room though, is available to all, and legal for all to withdraw money from, and it is PokerStars. PokerStars is by far the most crowded online poker room, and that’s definitely not a disadvantage for neither the players nor the poker room itself Poker88 . There is at any time a free chair at a table with any player’s favorite game, and at any different stake that the player wants to play.
What about the number of different games? Well, when a specified type of game is becoming popular at one poker room, it is likely to move across all poker rooms, so today most poker games are available at any of the online poker rooms. The most common poker games today is Texas Hold’em, Omaha, Omaha Hi/Lo (8 or better), Stud, Razz, Five-card draw, Deuce to Seven Triple Draw or Single Draw and Badugi. Also the mix-type games such as HORSE, HOSE, Mixed Hold’em and Mixed Omaha Hi/Lo are all offered at PokerStars and all the other poker rooms as well.
Also, online poker rooms need to do marketing to attract new players. The way they do in the online poker business, is to sign a sponsorship with professional poker players and by that binding them to play at the poker room. That’s why you see people playing poker on television, that wears caps, t-shirts or other clothing. Phil Ivey, Gus Hansen and Chris Ferguson is sponsored by Full Tilt Poker and they are all bound to play online at Full Tilt Poker as well as doing other marketing stunts. At PokerStars they have Daniel Negreanu, Chris Moneymaker and Viktor “Isildur1” Blom to attract customers, but they also are the headline sponsor at the event EPT (European Poker Tour).