Rapidly gaining on slots in popularity, video poker works the same way as regular poker, except you play against the machine. You are dealt a hand, you pick which cards to keep and which to discard, and then you get your new hand. And, it is hoped, you collect your winnings. This is somewhat more of a challenge and more active than slots because you have some control (or at least the illusion of control) over your fate, and it's easier than playing actual poker with a table full of folks who probably take it very seriously.
There are a number of varieties of this machine, including Jacks or Better, Deuces Wild, and so forth. Be sure to study your machine before you sit down. (The best returns are offered on the Bonus Poker machines; the payback for a pair of jacks or better is two times your bet, and three times for three of a kind.) The Holy Grail of video-poker machines is the 9/6 (it pays nine coins for a full house, six coins for a flush), but you'll need to pray a lot before you find one in town. Some machines offer double down: After you have won, you get a chance to draw cards against the machine, with the higher card the winner. If you win, your money is doubled, and you are offered a chance to go again. Your money can increase nicely during this time, and you can also lose it all very quickly, which is most annoying.
Technology is catching up with video poker, too. Now they even have touch screens, which offer a variety of different poker games, blackjack, and video slots -- just touch your screen and choose your poison.