Online blackjack games are the same games of 21 that you know and love. You are playing the same rules with the exact payouts. You have the opportunity to win or lose big; it all depends on how the cards fall and how you play them.
Just because you are playing online does not mean the game is going to change. You will be playing for real money in the same fashion that you would if you were in Vegas. Players have the same options as they do anywhere else. But, you don't have to drive to Vegas to play.
Types of Online Blackjack Games
Online blackjack games give you many options. There is the casino style blackjack where you are playing with other real players. Obviously you are all playing against the house, but you can chat with others, see how they play and watch the cards drop. It has the ability to give you that real casino feel without leaving your home.
If you prefer to play one on one with the dealer, you can do that too. Not everyone likes letting their bets be at the mercy of other gamblers. If you want to have your own table, you can do that too. Online casinos will give you more options than you knew were possible.