Talk to any online casino operator and they will all tell you that when it comes to choosing a range of casino games to feature on their site it is the slots games which attract the most attention for new casino games players. The online casino slots are considered to be the headline acts when it comes to gaining new customers, which is why the online casino software suppliers have such an important role in the online casino sector. Most of the major online casinos now offer two hundred of more casino slots games on their sites and new games are regularly added to the range. Slot machines have of course always been a popular gambling activity, and most of our seaside resorts have had slot machine arcades for years, but most of the slots games we now find on our online casino sites bear little or no relationship with the original 3-reel machines we used to play. Many of the modern online casino slots games now feature as many as five reels and multiple winning lines on each spin. There is even a slots game at the All Irish casino which operates with falling blocks instead of the customary reels. Most online casinos also offer a range of video slots with a wide variety of themes to cater for almost every interest. Apart from a few of the exceptions we have highlighted however, most of the casino slots we can play online are at least recognisable as digital versions of slot machines. The main difference between these new slots games and the machines we used to play in the clubs and pubs is the vast range of themes on which the games are based. There are now online casino slots games based on popular television programmes, films and cartoons, and even a variety of sports themed games. Playing casino slots games at an online casino is becoming an increasingly popular leisure activity and the online casinos will undoubtedly continue to introduce new games to attract our attention.