A slot online is a casino game where you win by lining up symbols on paylines. There are a wide range of different types of slot games, each with their own paytable. You can play video slots, progressive jackpots and classic slots. There are also slots with extra features, like sticky wilds and expanding wilds, as well as free spins and bonus rounds. The best online slots have high payout percentages and a good variety of themes.

Most slot games have five reels and between 1-5 paylines. You need to line up a certain number of matching symbols on one of these lines to win. The reels can be any size and the symbols can be anything from fruit to BARs and 7s. Some classic slots have a specific theme, while others have a random theme.

Many slot online sites feature titles from a variety of software suppliers. These include industry giants like NetEnt and IGT, as well as smaller, more boutique studios. The top sites offer a broad variety of Megaways, instant wins and Megaclusters slots as well as classic slots, 3D slots and more. There are also low, medium and high volatility games and a huge selection of betting limits to suit every player.

The oldest rule of all when playing a slot machine, online or offline, is to quit while you’re ahead. It’s very easy to spend more than you can afford, especially if you’re on a roll. This is especially true with progressive jackpot slots, which can add up very quickly.