A good online slot should include a range of extra features that make the game more appealing to players. This includes a wide selection of paylines, scatters and wild symbols that can help you build up a winning line in a single spin. Some of these extras can even be used to trigger bonus rounds that increase your chances of landing big jackpot wins.

You will also find many slots that are designed to support progressive jackpots, where part of every player’s wager contributes to the overall jackpot. This is more of a risky option and is best suited to players with an all-in mentality, but the potential to win millions makes it attractive to a lot of players.

Another aspect to look out for is how well a slot game is optimized for mobile play. This means that the game should run smoothly and that buttons are easy to see on touch screens. It’s also worth checking that the casino you are playing at has a high level of customer support. We like to see a live chat service that is open 24/7, plus email and phone support.

Finally, you should always check that the casino you are playing at has reputable gambling licenses. You can do this by looking for a logo from a recognised gambling commission in the footer of the website. If the casino doesn’t have a licence, it is probably not a safe place to play.