You can also play free slots using demo credits that cannot be redeemed for prizes right here at bonus.com and elsewhere. So it’s no wonder that the progressive jackpots are the most popular. Penny slots earned their name by allowing players to bet with just $0.01. But some slots can cost a minimum of $1.00 per spin, and betting the max can make your overall wager climb to as high as $125 or more. First, it gives you the best chance of winning the highest possible prizes. This doesn’t apply to all game providers, but it’s definitely worth pointing out. We suggest checking the RTP in your selected online casino just to make sure. Free casino games are basically the same games that you can play in real-money online casinos, but without real money involved. When you load any of the game, you are given a certain amount of virtual currency, which doesn’t have any real value. You can then play and increase your balance; however, you can never cash out the credits you accumulate in the game.