Slot games can be played at brick-and-mortar casinos or online venues. Also, this is an inexpensive form of entertainment, so long as you can manage your expectations and avoid delusions about finding the best odds on a slot machine right off the bat. All you have to do is slide in the money and push the button or pull the lever to get the reels spinning. There are a few key reasons why these games can be used by shopkeepers to dispense chewing gum while being the biggest money maker in casinos across the US.įor starters, there is no learning curve. Slot machines have been around since the 1800s.