The online slot machine concept is a simple one: you spin the reels, hope that matching symbols line up and win you some money. But there are a lot of different types of slots out there, and knowing what each type offers can help you choose which ones to play.

The first thing to look for when choosing an online slot is the paytable. This will show all the possible combinations and their payouts, as well as any special symbols (like wilds or scatters) that may be present. It will also display the paylines, which are usually set patterns that run horizontally across the reels, though some slot games can have vertical or diagonal lines as well.

Next, you’ll want to consider the game’s payout rate and volatility. The payout rate indicates how often the slot pays out winnings, while the volatility determines how big those wins will be. Generally, higher payout rates mean lower variance, but this isn’t always the case.

You’ll also want to check out the game’s bonus rounds. These can add a whole new dimension to the gameplay, and some can even award extra cash or free spins! For example, Gold Rush Gus is a popular slot that features a skill-testing bonus round where you can drive a minecart on a wobbly railway to nab coins.

Branded slots are another great way to add some familiarity to your online casino experience. These games feature themes and characters from popular movies, TV shows, video games or brands, which appeal to players who are looking for a more immersive gaming experience.