When it comes to playing at just about any online casino, one of the most popular types of games you will come across are slots games. The first real money wager made at an online casino was made in 1996 in an online casino known as the Inter Casino. The first company to release a progressive jackpot slot game was Microgaming, and the year was 1998. This slot game was known as Cash Splash.Since then, real money slots games have risen in popularity to the point where they are the go-to choice to both newcomers to online casinos and high rollers alike.