An online casino offers all the typical casino games such as blackjack, poker, baccarat, dice, roulette, punto banco, slot machine, video poker.
Among the most recent trends (2005) is the spread of the variant of the USA poker known as Texas Hold'em.

The operation of a casino online is fairly simple.
There are three main components: the website (from which you download the software), the casino software, and the server. The client contains all the information "local" (graphics, sounds, animations, etc. ..), decisions on the winning hand are taken on the server side, through a random number generator (RNG). Each game "called" the random number generator, indicating the number of degrees of freedom specific to that game.

The online casinos are usually available through websites, applications with Macromedia Flash (playable directly from the browser on different operating systems) or in the form of executables (downloaded and installed directly on the computer, but generally only available for Microsoft Windows) .
Despite the flash versions have undergone considerable improvements, the installable versions often have a graphics and sound better, in addition to a game more realistic, but downloading executable files from the network is, according to security experts computing, a high risk, especially to the possible presence of malware and spyware.

The online casino usually give the option of "virtual play", ie the player is allowed to play without money. This allows the player to practice to improve their skills before moving on to play for real money , and casino operators of the future customer loyalty.
The online casino also offer bonuses to new players and certain privileges, cash prizes and gifts for the best players.

Some field studies show that in online casino you win more than in real casinos. In general the percentage of winning would stand some of these studies at 94-95% and that for obvious reasons of economy in the management of the casino. In practice the online casino ensure high percentage of winning because they have operating costs low, and the fact of winning more often (the same type of play and game) and the customer loyalty leads him to play more and more frequently.