Betting limitsĬonsider betting limits before playing a slot game that pays real money. You'll find video slots, classic slots, progressive slots, and jackpot slots at legal online casinos. Identify the type of slot that best suits your needs. We recommend carefully reading the game rules and considering the following before playing: Types of slots Although slot games are easy to play, understanding how they work takes a little time - especially if you’re new to online casinos.