Surely everyone knows how to play casino slot machines, don't they? You just put your money in and click SPIN. Slot machines can be fun and some of them offer enormous jackpots. When we say enormous, we mean over a million dollars! There are so many slot-machines that it would be impossible for us to explain every single one here. There are single paylines, multiple paylines, progressive jackpots and some even have special features. Just be aware that you usually have an option to bet one or more units on every spin. .