Regardless of whether you are just starting out in your casino gaming journey or have been playing online casino games for a long time, there's a high chance you might not know all the interesting facts related to the online casinos and slots.Online slot games and the online casinos which offer them, for instance https://www.wildjackcasino.com have made a huge name for themselves in the gambling marketplace. Let's provide you with a quick account of how these slots and online casinos have evolved over the years.Their first appearanceSlot machines appeared for the first time in the year 1891, in Brooklyn, New York. It was the Sittman and Pitt company that designed the first slot machine back then. Thereafter, it took almost 4 years for the first-ever mechanical slot machine Liberty Bell to get launched. For almost 70 years since their introduction, slot machines continue to be played majorly by women, as men were more into other gambling forms.Here's an article published on theguardian.com detailing some fascinating facts related to the economics and maths of slot games.The gambling world witnessed another major change in the year 1964, with the launch of the first electric slot machine called Money Honey, developed by Bally technologies, taking casino games to an altogether new level. The decade that followed rewrote the history of slot games yet again.It's the introduction of microchips during the mid-70s and thereafter the introduction of first video casino title - Fortune Coin, in the 1975 by Walt Fraley that entirely change the world of slot machines as well as the general casino games. 21 years later the first-ever online casino was launched on the Internet, in 1996. At that time, people could play only 18 online casino games.Round-the-clock availability of online slots and casino gamesWith the advent of online slots and casino games, the gamblers no longer needed to travel long distances in order to indulge in their favourite pastime. One could not only enjoy his/her favourite games at any hour of the day/night, but could also play a lot many other casino games that were never available in the conventional brick-and-mortar set up.The easy availability of advanced mobile devices and powerful PCs, equipped with ultrafast Internet connections resulted in a whole new world of online casino games that could be played by just about anyone, anytime and anywhere. Today thousands of online slot games get introduced each month, and new online casinos are launched on a fairly regular basis. Here's an interesting write-up related to the future of slot machines, on wsj.com.Gambling in Macau and Las VegasIt's not just in the online casino world, slot machines rule in the land-based casinos too. Of all the casino games that are played in land-based casinos, more than 50% are slot machines. Despite attracting 2.5 million visitors per month, with 68% of them indulging in some type of gambling, although Vegas is the biggest gambling destination in the United States, it's not the biggest in the world!A large number of gamblers looking for physical casino experience head to Macau these days. The amount people bet in Las Vegas per week is almost close to what's bet in Macau in a single day! However, the credit for the biggest ever slot machine win goes to Las Vegas, at a whopping $ 39.71 million.On the whole, slots are by far the most popular of all casino games in both the online as well as the land-based casino world.