Games playing in a casino is always fun and loving provided the money is not lost. With the online casino games there is no risk involved in paying money. Still you can enjoy the thrill and excitement in playing slots.Some online casino games can be downloaded and played as required. While playing the game for the first time every player feels the difficulties in finding out the correct keys. But later this online casino games become much more interesting.Casino games are categorized into three different types:1. Simulated racing.2. Keno which is a random number ticketing games.3. Table games and playing with electronic gaming machines.All the online games are needed to be permitted by the respective law from where the web site is originated.For entertainment purpose these slots are played outside casinos with the games simulating machines. These gaming machines are called as slot machines. At a time, it’s usually played by one player.Random number games produce random numbers using random number generator from a computer. Based on the number received by a player, paper tickets or cards, which are called as bingo, are purchased around a table called as roulette. Such animations are found in the online casino games which creates the originality.The probability to win the slot depends purely on the luck factor which is quantified using standard deviations. The formula for the standard deviation is given as:SD = SQRT (Number of rounds * probability of win * probability of losing).A slot machine is also called as fruit machine or poker machine. When a button is pushed the reels on the gambling machine spins. Slots machines are equipped with the currency detector which sense and validate the currency inserter. All these difficulties are not there in playing an online casino games. This entire mechanical machine are being replaced by computerizes software programming and also cheaper to buy this digital machine.Pay table is designed which reflect the number of credits the player would receive if the particular symbols are arranged inline. Multiple lines can also be played by a player in online casino games. There is a possibility of cheating in mechanical slot machines where as this is not possible in online games. Winners are announced automatically. Though this game of chance is a gambling it should be played genuinely.Bingo cards are other type of casino games which were originated in Italy. Previously it was used as an educational tool for children to learn multiplication tables and spellings, etc. Bingo games became popular in US when it was used by church to raise funds for charity. Many gaming etiquette followed in mechanical gaming machine such as jackpot, wild number generations are not followed in online games. Yet playing these online slots games is quite exciting and is a good entertainment.