An online casino has all the typical casino games: blackjack, poker, baccarat, craps, roulette, baccarat, slot machines, video poker. Among the more recent trends (2005) is the spread of the specialty of Texas Hold'em poker.

The operation of a casino online is easy. 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, sound, animation, etc.), the decisions are instead taken on the winning side server through a random number generator (RNG). Each game "called" the random number generator, indicating the number of degrees of freedom specific to that game.

Online casinos are typically accessible through Web sites with Macromedia Flash (playable directly from the browser on different operating systems) or in the form of executables (downloaded and installed directly on your computer, but usually only available for Microsoft Windows) . Despite the flash versions have undergone substantial improvements, installed versions often have a better graphics and audio, as well as a gaming experience more realistic, but downloading executable files from the network, according to the security experts, a high risk , mainly related to the possible presence of malware and spy ware.

Online casinos generally yield the possibility of "virtual play", i.e. the player has the possibility of playing without money. This allows the player to practice to improve their skills before moving on to play for real money, casino operators and the future of customer loyalty. Online casinos also offer bonuses to new players as well as certain privileges, cash prizes and gifts for the best players.

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

For those who do not know how to play roulette, I'll explain how to play roulette for free. The roulette wheel is perfectly balanced, consisting of 38 identical boxes, numbered from 1 to 36, including 0 and 00. In total, these 37 or 38 numbers, depending on which free roulette concerned. The explanation for play free roulette is when the game starts. Each game begins when the dealer spins the wheel in one direction and then releases a small ivory ball in the inside edge of the wheel in the opposite direction. As the wheel rotates, the ball slowly loses speed. It bounces among the slots and finally falls into one of the numbered boxes. The number at which drops the ball is declared the winner of the free roulette game.